diff --git a/aio/content/guide/build.md b/aio/content/guide/build.md
index 860b7f6785..c5b8f6f360 100644
--- a/aio/content/guide/build.md
+++ b/aio/content/guide/build.md
@@ -289,8 +289,20 @@ Each budget entry is a JSON object with the following properties:
 
 <table>
   <tr>
-    <th><t>Property</t><t>属性</t></th>
-    <th><t>Value</t><t>值</t></th>
+    <th>
+    
+    Property
+    
+    属性
+    
+    </th>
+    <th>
+    
+    Value
+    
+    值
+    
+    </th>
   </tr>
 
   <tr>
diff --git a/aio/content/guide/file-structure.md b/aio/content/guide/file-structure.md
index 9700723829..0c0135571e 100644
--- a/aio/content/guide/file-structure.md
+++ b/aio/content/guide/file-structure.md
@@ -38,17 +38,27 @@ The top level of the workspace contains a number of workspace-wide configuration
 
 工作空间的顶级包含一系列工作空间级的配置文件。
 
-| <t>WORKSPACE CONFIG FILES</t><t>工作空间配置文件</t>    | <t>PURPOSE</t><t>用途</t> |
+| WORKSPACE CONFIG FILES | PURPOSE |
 | :--------------------- | :------------------------------------------|
-| `.editorconfig`         | <t>Configuration for code editors. See [EditorConfig](https://editorconfig.org/). </t><t>代码编辑器配置。参见 [EditorConfig](https://editorconfig.org/)</t> |
-| `.gitignore`            | <t>Specifies intentionally untracked files that [Git](https://git-scm.com/) should ignore. </t><t>指定 [Git](https://git-scm.com/) 要忽略的非跟踪的文件。</t> |
-| `angular.json`         | <t>CLI configuration defaults for all projects in the workspace, including configuration options for build, serve, and test tools that the CLI uses, such as [TSLint](https://palantir.github.io/tslint/), [Karma](https://karma-runner.github.io/), and [Protractor](http://www.protractortest.org/). For details, see [Angular Workspace Configuration](guide/workspace-config). </t><t>工作区中所有项目的默认 CLI 配置，包括 CLI 使用的构建选项、运行选项、测试工具选项（比如 [TSLint](https://palantir.github.io/tslint/)、[Karma](https://karma-runner.github.io/)、[Protractor](http://www.protractortest.org/)）等。欲知详情，参见 [Angular 工作空间配置](guide/workspace-config)。</t> |
-| `node_modules`          | <t>Provides [npm packages](guide/npm-packages) to the entire workspace. </t><t>提供给整个工作空间的 [npm 包](guide/npm-packages)。</t> |
-| `package.json`         | <t>Configures [npm package dependencies](guide/npm-packages) that are available to all projects in the workspace. See [npm documentation](https://docs.npmjs.com/files/package.json) for the specific format and contents of this file.</t><t>配置用于工作空间中所有项目的包依赖项。有关此文件的特有格式和内容，参见 [npm 文档](https://docs.npmjs.com/files/package.json)。</t> |
-| `package-lock.json`     | <t>Provides version information for all packages installed into `node_modules` by the npm client. See [npm documentation](https://docs.npmjs.com/files/package-lock.json) for details. If you use the yarn client, this file will be [yarn.lock](https://yarnpkg.com/lang/en/docs/yarn-lock/) instead. </t><t>为 npm 客户端安装到 `node_modules` 中的所有软件包提供版本信息。详情参见 [npm documentation](https://docs.npmjs.com/files/package-lock.json)。如果你使用 yarn 客户端，此文件会由 [yarn.lock](https://yarnpkg.com/lang/en/docs/yarn-lock/) 代替。</t> |
-| `tsconfig.json`    | <t>Default [TypeScript](https://www.typescriptlang.org/) configuration for apps in the workspace, including TypeScript and Angular template compiler options. See [TypeScript Configuration](guide/typescript-configuration). </t><t>工作空间中所有应用的默认 [TypeScript](https://www.typescriptlang.org/) 配置。包括 TypeScript 选项和 Angular 模板编译器选项。参见 [TypeScript 配置](guide/typescript-configuration)。</t> |
-| `tslint.json`          | <t>Default [TSLint](https://palantir.github.io/tslint/) configuration for apps in the workspace. </t><t>工作空间中所有应用的默认 [TSLint](https://palantir.github.io/tslint/) 配置。</t> |
-| `README.md`             | <t>Introductory documentation. </t><t>介绍文档</t> |
+| 工作空间配置文件 | 用途 |
+| `.editorconfig` | Configuration for code editors. See [EditorConfig](https://editorconfig.org/).  |
+| `.editorconfig` | 代码编辑器配置。参见 [EditorConfig](https://editorconfig.org/) |
+| `.gitignore` | Specifies intentionally untracked files that [Git](https://git-scm.com/) should ignore.  |
+| `.gitignore` | 指定 [Git](https://git-scm.com/) 要忽略的非跟踪的文件。 |
+| `angular.json` | CLI configuration defaults for all projects in the workspace, including configuration options for build, serve, and test tools that the CLI uses, such as [TSLint](https://palantir.github.io/tslint/), [Karma](https://karma-runner.github.io/), and [Protractor](http://www.protractortest.org/). For details, see [Angular Workspace Configuration](guide/workspace-config).  |
+| `angular.json` | 工作区中所有项目的默认 CLI 配置，包括 CLI 使用的构建选项、运行选项、测试工具选项（比如 [TSLint](https://palantir.github.io/tslint/)、[Karma](https://karma-runner.github.io/)、[Protractor](http://www.protractortest.org/)）等。欲知详情，参见 [Angular 工作空间配置](guide/workspace-config)。 |
+| `node_modules` | Provides [npm packages](guide/npm-packages) to the entire workspace.  |
+| `node_modules` | 提供给整个工作空间的 [npm 包](guide/npm-packages)。 |
+| `package.json` | Configures [npm package dependencies](guide/npm-packages) that are available to all projects in the workspace. See [npm documentation](https://docs.npmjs.com/files/package.json) for the specific format and contents of this file. |
+| `package.json` | 配置用于工作空间中所有项目的包依赖项。有关此文件的特有格式和内容，参见 [npm 文档](https://docs.npmjs.com/files/package.json)。 |
+| `package-lock.json` | Provides version information for all packages installed into `node_modules` by the npm client. See [npm documentation](https://docs.npmjs.com/files/package-lock.json) for details. If you use the yarn client, this file will be [yarn.lock](https://yarnpkg.com/lang/en/docs/yarn-lock/) instead.  |
+| `package-lock.json` | 为 npm 客户端安装到 `node_modules` 中的所有软件包提供版本信息。详情参见 [npm documentation](https://docs.npmjs.com/files/package-lock.json)。如果你使用 yarn 客户端，此文件会由 [yarn.lock](https://yarnpkg.com/lang/en/docs/yarn-lock/) 代替。 |
+| `tsconfig.json` | Default [TypeScript](https://www.typescriptlang.org/) configuration for apps in the workspace, including TypeScript and Angular template compiler options. See [TypeScript Configuration](guide/typescript-configuration).  |
+| `tsconfig.json` | 工作空间中所有应用的默认 [TypeScript](https://www.typescriptlang.org/) 配置。包括 TypeScript 选项和 Angular 模板编译器选项。参见 [TypeScript 配置](guide/typescript-configuration)。 |
+| `tslint.json` | Default [TSLint](https://palantir.github.io/tslint/) configuration for apps in the workspace.  |
+| `tslint.json` | 工作空间中所有应用的默认 [TSLint](https://palantir.github.io/tslint/) 配置。 |
+| `README.md` | Introductory documentation.  |
+| `README.md` | 介绍文档 |
 
 All projects within a workspace share a [CLI configuration context](guide/workspace-config). 
 Project-specific [TypeScript](https://www.typescriptlang.org/) configuration files inherit from the workspace-wide `tsconfig.*.json`, and app-specific [TSLint](https://palantir.github.io/tslint/) configuration files inherit from the workspace-wide `tslint.json`.
@@ -86,21 +96,35 @@ Workspace-wide `node_modules` dependencies are visible to this project.
 `src/` 子目录包含该初始应用的源文件（应用逻辑、数据和资源）以及配置文件。
 工作空间级的 `node_modules` 依赖，对于这个项目也是可见的。
 
-| <t>APP SOURCE & CONFIG FILES</t><t>应用源码与配置文件</t>    | <t>PURPOSE</t><t>用途</t> |
+| APP SOURCE & CONFIG FILES | PURPOSE |
 | :--------------------- | :------------------------------------------|
-| `app/`                  | <t>Contains the component files in which your app logic and data are defined. See details in [App source folder](#app-src) below. </t><t>包含组件文件，其中定义了应用逻辑和数据。详情参见稍后的[应用源码目录](#app-src)。</t> |
-| `assets/`               | <t>Contains image files and other asset files to be copied as-is when you build your application. </t><t>包含图像文件和其它文件，当构建应用时会被原样赋值到构建目标中。</t> |
-| `environments/`         | <t>Contains build configuration options for particular target environments. By default there is an unnamed standard development environment and a production ("prod") environment. You can define additional target environment configurations. </t><t>包含针对特定目标环境的配置选项。默认情况下有一个未命名的标准开发环境和一个名叫 "prod" 的产品环境。你可以定义一些额外的目标环境配置。</t> |
-| `browserlist`           | <t>Configures sharing of target browsers and Node.js versions among various front-end tools. See [Browserlist on GitHub](https://github.com/browserslist/browserslist) for more information.  </t><t>配置各个目标浏览器和 Node.js 版本之间的市场占有率，供各种前端工具使用。详情参见 [GitHub 上的 Browserlist](https://github.com/browserslist/browserslist)。</t> |
-| `favicon.ico`           | <t>An icon to use for this app in the bookmark bar. </t><t>一个用在书签栏上的应用图标。</t> |
-| `index.html`            | <t>The main HTML page that is served when someone visits your site. The CLI automatically adds all JavaScript and CSS files when building your app, so you typically don't need to add any `<script>` or` <link>` tags here manually. </t><t>当有人访问你的应用时给出的主 HTML 文件，你通常不用手动在这里添加任何 `<script>` 或` <link>` 标签。</t> |
-| `main.ts`               | <t>The main entry point for your app. Compiles the application with the [JIT compiler](https://angular.io/guide/glossary#jit) and bootstraps the application's root module (AppModule) to run in the browser. You can also use the [AOT compiler](https://angular.io/guide/aot-compiler) without changing any code by appending the `--aot` flag to the CLI `build` and `serve` commands. </t><t>应用的主入口点。使用 [JIT 编译器](https://angular.cn/guide/glossary#jit)编译应用，并引导应用的根模块 AppModule 来运行在浏览器中。你也可以为 CLI 的 `build` 和 `serve` 命令添加 `--aot` 标志，来使用 [AOT 编译器](https://angular.cn/guide/aot-compiler) 而不必修改任何代码。</t> |
-| `polyfills.ts`          | <t>Provides polyfill scripts for browser support. </t><t>为浏览器支持提供腻子脚本（polyfill）。</t> |
-| `styles.sass`           | <t>Lists CSS files that supply styles for a project. The extension reflects the style preprocessor you have configured for the project. </t><t>列出为项目提供样式的 CSS 文件。其扩展名和你为项目配置的样式预处理器保持一致。</t> |
-| `test.ts`               | <t>The main entry point for your unit tests, with some Angular-specific configuration. You don't typically need to edit this file. </t><t>单元测试的主入口点，其中带有一些特定于 Angular 的配置。一般来说你不必编辑这个问题。</t> |
-| `tsconfig.app.json`    | <t>Inherits from the workspace-wide `tsconfig.json` file. </t><t>继承自工作空间级的 `tsconfig.json` 文件。</t> |
-| `tsconfig.spec.json`   | <t>Inherits from the workspace-wide `tsconfig.json` file. </t><t>继承自工作空间级的 `tsconfig.json` 文件。</t> |
-| `tslint.json`          | <t>Inherits from the workspace-wide `tslint.json` file. </t><t>继承自工作空间级的 `tsconfig.json` 文件。</t> |
+| 应用源码与配置文件 | 用途 |
+| `app/` | Contains the component files in which your app logic and data are defined. See details in [App source folder](#app-src) below.  |
+| `app/` | 包含组件文件，其中定义了应用逻辑和数据。详情参见稍后的[应用源码目录](#app-src)。 |
+| `assets/` | Contains image files and other asset files to be copied as-is when you build your application.  |
+| `assets/` | 包含图像文件和其它文件，当构建应用时会被原样赋值到构建目标中。 |
+| `environments/` | Contains build configuration options for particular target environments. By default there is an unnamed standard development environment and a production ("prod") environment. You can define additional target environment configurations.  |
+| `environments/` | 包含针对特定目标环境的配置选项。默认情况下有一个未命名的标准开发环境和一个名叫 "prod" 的产品环境。你可以定义一些额外的目标环境配置。 |
+| `browserlist` | Configures sharing of target browsers and Node.js versions among various front-end tools. See [Browserlist on GitHub](https://github.com/browserslist/browserslist) for more information.   |
+| `browserlist` | 配置各个目标浏览器和 Node.js 版本之间的市场占有率，供各种前端工具使用。详情参见 [GitHub 上的 Browserlist](https://github.com/browserslist/browserslist)。 |
+| `favicon.ico` | An icon to use for this app in the bookmark bar.  |
+| `favicon.ico` | 一个用在书签栏上的应用图标。 |
+| `index.html` | The main HTML page that is served when someone visits your site. The CLI automatically adds all JavaScript and CSS files when building your app, so you typically don't need to add any `<script>` or` <link>` tags here manually.  |
+| `index.html` | 当有人访问你的应用时给出的主 HTML 文件，你通常不用手动在这里添加任何 `<script>` 或` <link>` 标签。 |
+| `main.ts` | The main entry point for your app. Compiles the application with the [JIT compiler](https://angular.io/guide/glossary#jit) and bootstraps the application's root module (AppModule) to run in the browser. You can also use the [AOT compiler](https://angular.io/guide/aot-compiler) without changing any code by appending the `--aot` flag to the CLI `build` and `serve` commands.  |
+| `main.ts` | 应用的主入口点。使用 [JIT 编译器](https://angular.cn/guide/glossary#jit)编译应用，并引导应用的根模块 AppModule 来运行在浏览器中。你也可以为 CLI 的 `build` 和 `serve` 命令添加 `--aot` 标志，来使用 [AOT 编译器](https://angular.cn/guide/aot-compiler) 而不必修改任何代码。 |
+| `polyfills.ts` | Provides polyfill scripts for browser support.  |
+| `polyfills.ts` | 为浏览器支持提供腻子脚本（polyfill）。 |
+| `styles.sass` | Lists CSS files that supply styles for a project. The extension reflects the style preprocessor you have configured for the project.  |
+| `styles.sass` | 列出为项目提供样式的 CSS 文件。其扩展名和你为项目配置的样式预处理器保持一致。 |
+| `test.ts` | The main entry point for your unit tests, with some Angular-specific configuration. You don't typically need to edit this file.  |
+| `test.ts` | 单元测试的主入口点，其中带有一些特定于 Angular 的配置。一般来说你不必编辑这个问题。 |
+| `tsconfig.app.json` | Inherits from the workspace-wide `tsconfig.json` file.  |
+| `tsconfig.app.json` | 继承自工作空间级的 `tsconfig.json` 文件。 |
+| `tsconfig.spec.json` | Inherits from the workspace-wide `tsconfig.json` file.  |
+| `tsconfig.spec.json` | 继承自工作空间级的 `tsconfig.json` 文件。 |
+| `tslint.json` | Inherits from the workspace-wide `tslint.json` file.  |
+| `tslint.json` | 继承自工作空间级的 `tsconfig.json` 文件。 |
 
 ### Default app project e2e files
 
@@ -156,11 +180,18 @@ Inside the `src/` folder, the `app/` folder contains your app's logic and data.
 在 `src/` 目录下，`app/` 目录包含你的应用逻辑和数据。Angular 组件、模板和样式都在这里。
 `assets/` 子目录包含图片和应用所需的其它文件。`src/` 顶层的文件用于支持测试和运行你的应用。
 
-| <t>APP SOURCE FILES</t><t>应用源文件</t> | <t>PURPOSE</t><t>用途</t> |
+| APP SOURCE FILES | PURPOSE |
 | :-------------------------- | :------------------------------------------|
-| `app/app.component.ts`       | <t>Defines the logic for the app's root component, named `AppComponent`. The view associated with this root component becomes the root of the [view hierarchy](guide/glossary#view-hierarchy) as you add components and services to your app. </t><t>定义应用程序根组件（名叫 `AppComponent`）的逻辑代码。当你往应用中添加组件和服务时，根组件所关联的视图会作为 [view hierarchy](guide/glossary#view-hierarchy) 视图树的根。</t> |
-| `app/app.component.html`     | <t>Defines the HTML template associated with the root `AppComponent`. </t><t>定义与根组件 `AppComponent` 关联的模板。</t> |
-| `app/app.component.css`      | <t>Defines the base CSS stylesheet for the root `AppComponent`. </t><t>定义根组件 `AppComponent` 的 CSS 样式表。</t> |
-| `app/app.component.spec.ts`  | <t>Defines a unit test for the root `AppComponent`. </t><t>定义根组件 `AppComponent` 的单元测试文件。</t> |
-| `app/app.module.ts`          | <t>Defines the root module, named `AppModule`, that tells Angular how to assemble the application. Initially declares only the `AppComponent`. As you add more components to the app, they must be declared here. </t><t>定义根模块（名叫 `AppModule`），它告诉 Angular 如何组装应用。其初始声明中只有 `AppComponent`。当你往应用中添加更多组件时，它们必须声明在这里。</t> |
-| `assets/*`                   | <t>Contains image files and other asset files to be copied as-is when you build your application. </t><t>包含图片文件和其它资源，当构建应用时，它们将被原样复制到目标目录中。</t> |
+| 应用源文件 | 用途 |
+| `app/app.component.ts` | Defines the logic for the app's root component, named `AppComponent`. The view associated with this root component becomes the root of the [view hierarchy](guide/glossary#view-hierarchy) as you add components and services to your app.  |
+| `app/app.component.ts` | 定义应用程序根组件（名叫 `AppComponent`）的逻辑代码。当你往应用中添加组件和服务时，根组件所关联的视图会作为 [view hierarchy](guide/glossary#view-hierarchy) 视图树的根。 |
+| `app/app.component.html` | Defines the HTML template associated with the root `AppComponent`.  |
+| `app/app.component.html` | 定义与根组件 `AppComponent` 关联的模板。 |
+| `app/app.component.css` | Defines the base CSS stylesheet for the root `AppComponent`.  |
+| `app/app.component.css` | 定义根组件 `AppComponent` 的 CSS 样式表。 |
+| `app/app.component.spec.ts` | Defines a unit test for the root `AppComponent`.  |
+| `app/app.component.spec.ts` | 定义根组件 `AppComponent` 的单元测试文件。 |
+| `app/app.module.ts` | Defines the root module, named `AppModule`, that tells Angular how to assemble the application. Initially declares only the `AppComponent`. As you add more components to the app, they must be declared here.  |
+| `app/app.module.ts` | 定义根模块（名叫 `AppModule`），它告诉 Angular 如何组装应用。其初始声明中只有 `AppComponent`。当你往应用中添加更多组件时，它们必须声明在这里。 |
+| `assets/*` | Contains image files and other asset files to be copied as-is when you build your application.  |
+| `assets/*` | 包含图片文件和其它资源，当构建应用时，它们将被原样复制到目标目录中。 |
diff --git a/aio/content/guide/forms-overview.md b/aio/content/guide/forms-overview.md
index 349bfad2b6..81217a8e03 100644
--- a/aio/content/guide/forms-overview.md
+++ b/aio/content/guide/forms-overview.md
@@ -54,14 +54,21 @@ The table below summarizes the key differences between reactive and template-dri
   td, th {vertical-align: top};
 </style>
 
-||<t>Reactive</t><t>响应式</t>|<t>Template-driven</t><t>模板驱动</t>|
+|| Reactive | Template-driven |
 |--- |--- |--- |
-|<t>Setup (form model)</t><t>建立（表单模式）</t>|<t>More explicit, created in component class</t><t>显式，在组件类中创建。</t>|<t>Less explicit, created by directives</t><t>隐式，由组件创建。</t>|
-|<t>Data model</t><t>数据模式</t>|<t>Structured</t><t>结构化</t>|<t>Unstructured</t><t>非结构化</t>|
-|<t>Predictability</t><t>可预测性</t>|<t>Synchronous</t><t>同步</t>|<t>Asynchronous</t><t>异步</t>|
-|<t>Form validation</t><t>表单验证</t>|<t>Functions</t><t>函数</t>|<t>Directives</t><t>指令</t>|
-|<t>Mutability</t><t>可变性</t>|<t>Immutable</t><t>不可变</t>|<t>Mutable</t><t>可变</t>|
-|<t>Scalability</t><t>可伸缩性</t>|<t>Low-level API access</t><t>访问底层 API</t>|<t>Abstraction on top of APIs</t><t>在 API 之上的抽象</t>|
+|| 响应式 | 模板驱动 |
+| Setup (form model) | More explicit, created in component class | Less explicit, created by directives |
+| 建立（表单模式） | 显式，在组件类中创建。 | 隐式，由组件创建。 |
+| Data model | Structured | Unstructured |
+| 数据模式 | 结构化 | 非结构化 |
+| Predictability | Synchronous | Asynchronous |
+| 可预测性 | 同步 | 异步 |
+| Form validation | Functions | Directives |
+| 表单验证 | 函数 | 指令 |
+| Mutability | Immutable | Mutable |
+| 可变性 | 不可变 | 可变 |
+| Scalability | Low-level API access | Abstraction on top of APIs |
+| 可伸缩性 | 访问底层 API | 在 API 之上的抽象 |
 
 ## Common foundation
 
diff --git a/aio/content/guide/i18n.md b/aio/content/guide/i18n.md
index 73f88e2952..5b614ea418 100644
--- a/aio/content/guide/i18n.md
+++ b/aio/content/guide/i18n.md
@@ -132,18 +132,29 @@ time of writing:
 CLDR 和 Angular 使用的地区标识基于 [BCP47](http://www.rfc-editor.org/rfc/bcp/bcp47.txt)。
 这些规范可能会随时间而变化，下表中是本文编写时地区标识的新旧版本对照表：
 
-| <t>Locale name</t><t>地区名称</t> | <t>Old locale id</t><t>旧 ID</t> | <t>New locale id</t><t>新 ID</t> |
+| Locale name | Old locale id | New locale id |
 |-------------------------------|-------------------|---------------|
-| <t>Indonesian</t><t>印度尼西亚</t> | in | id |
-| <t>Hebrew</t><t>希伯来</t> | iw | he |
-| <t>Romanian Moldova</t><t>罗马尼亚摩尔多瓦</t> | mo | ro-MD |
-| <t>Norwegian Bokmål</t><t>挪威 Bokmål</t> | no, no-NO | nb |
-| <t>Serbian Latin</t><t>塞尔维亚拉丁语</t> | sh | sr-Latn |
-| <t>Filipino</t><t>菲律宾</t> | tl | fil |
-| <t>Portuguese Brazil</t><t>葡萄牙巴西</t> | pt-BR | pt |
-| <t>Chinese Simplified</t><t>中文简体</t> | zh-cn, zh-Hans-CN | zh-Hans |
-| <t>Chinese Traditional</t><t>中文繁体</t> | zh-tw, zh-Hant-TW | zh-Hant |
-| <t>Chinese Traditional Hong Kong</t><t>中文繁体（香港）</t> | zh-hk | zh-Hant-HK |
+| 地区名称     | 旧 ID          | 新 ID         |
+| Indonesian | in | id |
+| 印度尼西亚 | in | id |
+| Hebrew | iw | he |
+| 希伯来 | iw | he |
+| Romanian Moldova | mo | ro-MD |
+| 罗马尼亚摩尔多瓦 | mo | ro-MD |
+| Norwegian Bokmål | no, no-NO | nb |
+| 挪威 Bokmål | no, no-NO | nb |
+| Serbian Latin | sh | sr-Latn |
+| 塞尔维亚拉丁语 | sh | sr-Latn |
+| Filipino | tl | fil |
+| 菲律宾 | tl | fil |
+| Portuguese Brazil | pt-BR | pt |
+| 葡萄牙巴西 | pt-BR | pt |
+| Chinese Simplified | zh-cn, zh-Hans-CN | zh-Hans |
+| 中文简体 | zh-cn, zh-Hans-CN | zh-Hans |
+| Chinese Traditional | zh-tw, zh-Hant-TW | zh-Hant |
+| 中文繁体 | zh-tw, zh-Hant-TW | zh-Hant |
+| Chinese Traditional Hong Kong | zh-hk | zh-Hant-HK |
+| 中文繁体（香港） | zh-hk | zh-Hant-HK |
 
 ## i18n pipes
 
diff --git a/aio/content/guide/npm-packages.md b/aio/content/guide/npm-packages.md
index 4ab42f9c01..c1b600bf4e 100644
--- a/aio/content/guide/npm-packages.md
+++ b/aio/content/guide/npm-packages.md
@@ -104,6 +104,7 @@ For a complete list of Angular packages, see the [API reference](http://angular.
 新的 Angular 工作空间的 `package.json` 文件中默认包含下列 Angular 包。
 要了解 Angular 包的完整列表，参见 [API 参考手册](http://angular.io/api?type=package)。
 
+<!-- TODO: Translate -->
 Package name                               | Description
 ----------------------------------------   | --------------------------------------------------
 [**@angular/animations**](api/animations) | Angular's animations library makes it easy to define and apply animation effects such as page and list transitions. For more information, see the [Animations guide](guide/animations).
@@ -187,6 +188,7 @@ The following `devDependencies` are provided in the default `package.json` file
 
 Package name                               | Description
 ----------------------------------------   | -----------------------------------
+包名                               | 说明
 [**@angular&#8209;devkit/<br />build&#8209;angular**](https://github.com/angular/angular-cli/) | The Angular build tools.
 [**@angular/cli**](https://github.com/angular/angular-cli/) | The Angular CLI tools.
 **@angular/<br />compiler&#8209;cli** | The Angular compiler, which is invoked by the Angular CLI's `ng build` and `ng serve` commands.
diff --git a/aio/content/guide/observables.md b/aio/content/guide/observables.md
index ec73e7a4eb..8ce507b928 100644
--- a/aio/content/guide/observables.md
+++ b/aio/content/guide/observables.md
@@ -53,11 +53,15 @@ A handler for receiving observable notifications implements the `Observer` inter
 
 用于接收可观察对象通知的处理器要实现 `Observer` 接口。这个对象定义了一些回调函数来处理可观察对象可能会发来的三种通知：
 
-| <t>Notification type</t><t>通知类型</t> | <t>Description</t><t>说明</t> |
+| Notification type | Description |
 |:---------|:-------------------------------------------|
-| `next`  | <t>Required. A handler for each delivered value. Called zero or more times after execution starts.</t><t>必要。用来处理每个送达值。在开始执行后可能执行零次或多次。</t>|
-| `error` | <t>Optional. A handler for an error notification. An error halts execution of the observable instance.</t><t> 可选。用来处理错误通知。错误会中断这个可观察对象实例的执行过程。 </t>|
-| `complete` | <t>Optional. A handler for the execution-complete notification. Delayed values can continue to be delivered to the next handler after execution is complete.</t><t> 可选。用来处理执行完毕（complete）通知。当执行完毕后，这些值就会继续传给下一个处理器。 </t>|
+| 通知类型 | 说明 |
+| `next` | Required. A handler for each delivered value. Called zero or more times after execution starts. |
+| `next` | 必要。用来处理每个送达值。在开始执行后可能执行零次或多次。 |
+| `error` | Optional. A handler for an error notification. An error halts execution of the observable instance. |
+| `error` |  可选。用来处理错误通知。错误会中断这个可观察对象实例的执行过程。  |
+| `complete` | Optional. A handler for the execution-complete notification. Delayed values can continue to be delivered to the next handler after execution is complete. |
+| `complete` |  可选。用来处理执行完毕（complete）通知。当执行完毕后，这些值就会继续传给下一个处理器。  |
 
 An observer object can define any combination of these handlers. If you don't supply a handler for a notification type, the observer ignores notifications of that type.
 
diff --git a/aio/content/guide/releases.md b/aio/content/guide/releases.md
index 6ec078027a..0283a8ee3a 100644
--- a/aio/content/guide/releases.md
+++ b/aio/content/guide/releases.md
@@ -120,10 +120,13 @@ The following table contains our current target release dates for the next two m
 
 下表中包含下面两个 Angular 主版本的目标发布日期：
 
- <t>Date</t><t>日期</t>  | <t>Stable Release</t><t>稳定版</t> | <t>Compatibility</t><t>兼容性</t>
+Date | Stable Release | Compatibility
  ---------------------- | -------------- | -------------
+日期 | 稳定版 | 兼容性
  March/April 2019       | 8.0.0          | ^7.0.0
+ 2019年3~4月       | 8.0.0          | ^7.0.0
  September/October 2019 | 9.0.0          | ^8.0.0
+ 2019年9~10月 | 9.0.0          | ^8.0.0
 
  Compatibility note: The primary goal of the backward compatibility promise is to ensure that changes in the core framework and tooling don't break the existing ecosystem of components and applications and don't put undue upgrade/migration burden on Angular application and component authors.
 
@@ -153,9 +156,13 @@ The following table provides the support status and key dates for Angular versio
 
 Version | Status | Released     | Active Ends  | LTS Ends
 ------- | ------ | ------------ | ------------ | ------------ 
+版本 | 状态 | 发布     | 停止活动  | LTS 结束
 ^7.0.0  | Active | Oct 18, 2018 | Apr 18, 2019 | Apr 18, 2020
+^7.0.0  | 活动 | 2018年10月18日 | 2019年4月18日 | 2020年4月18日
 ^6.0.0  | LTS    | May 3, 2018  | Nov 3, 2018  | Nov 3, 2019
+^6.0.0  | LTS    | 2018年5月3日  | 2018年11月3日  | 2019年11月3日
 ^5.0.0  | LTS    | Nov 1, 2017  | May 1, 2018  | May 1, 2019
+^5.0.0  | LTS    | 2017年11月1日  | 2018年5月1日  | 2019年5月1日
 
 LTS for Angular version ^4.0.0 ended on September 23, 2018.
 
diff --git a/aio/content/guide/rx-library.md b/aio/content/guide/rx-library.md
index 682190cd4c..d2752ff9c7 100644
--- a/aio/content/guide/rx-library.md
+++ b/aio/content/guide/rx-library.md
@@ -96,14 +96,21 @@ RxJS 提供了很多操作符，不过只有少数是常用的。
 
 </div>
 
-| <t>Area</t><t>类别</t> | <t>Operators</t><t>操作</t>  |
+| Area | Operators |
 | :------------ | :---------- |
-| <t>Creation</t><t>创建</t> | `from`, `fromPromise`,`fromEvent`, `of`  |
-| <t>Combination</t><t>组合</t> | `combineLatest`, `concat`, `merge`, `startWith` , `withLatestFrom`, `zip`  |
-| <t>Filtering</t><t>过滤</t> | `debounceTime`, `distinctUntilChanged`, `filter`, `take`, `takeUntil`  |
-| <t>Transformation</t><t>转换</t> | `bufferTime`, `concatMap`, `map`, `mergeMap`, `scan`, `switchMap`  |
-| <t>Utility</t><t>工具</t> | `tap`  |
-| <t>Multicasting</t><t>多播</t> | `share`  |
+| 类别 | 操作 |
+| Creation | `from`, `fromPromise`,`fromEvent`, `of`  |
+| 创建 | `from`, `fromPromise`,`fromEvent`, `of`  |
+| Combination | `combineLatest`, `concat`, `merge`, `startWith` , `withLatestFrom`, `zip`  |
+| 组合 | `combineLatest`, `concat`, `merge`, `startWith` , `withLatestFrom`, `zip`  |
+| Filtering | `debounceTime`, `distinctUntilChanged`, `filter`, `take`, `takeUntil`  |
+| 过滤 | `debounceTime`, `distinctUntilChanged`, `filter`, `take`, `takeUntil`  |
+| Transformation | `bufferTime`, `concatMap`, `map`, `mergeMap`, `scan`, `switchMap` |
+| 转换 | `bufferTime`, `concatMap`, `map`, `mergeMap`, `scan`, `switchMap`  |
+| Utility | `tap`  |
+| 工具 | `tap`  |
+| Multicasting | `share`  |
+| 多播 | `share`  |
 
 ## Error handling