diff --git a/aio/content/guide/testing.md b/aio/content/guide/testing.md
index 992ecb346c..53e27c901a 100644
--- a/aio/content/guide/testing.md
+++ b/aio/content/guide/testing.md
@@ -1053,7 +1053,7 @@ that wraps the _title_ property interpolation binding.
 You update the `beforeEach` to find that element with a standard HTML `querySelector`
 and assign it to the `h1` variable.
 
-你要修改 `beforeEach` 来使用标准的 HTML `querySelector` 来找到钙元素，并把它赋值给 `h1` 变量。
+你要修改 `beforeEach` 来使用标准的 HTML `querySelector` 来找到该元素，并把它赋值给 `h1` 变量。
 
 <code-example 
   path="testing/src/app/banner/banner.component.spec.ts" 
diff --git a/aio/content/tutorial/toh-pt3.md b/aio/content/tutorial/toh-pt3.md
index 3b7d5ed3ee..c5a9bc5830 100644
--- a/aio/content/tutorial/toh-pt3.md
+++ b/aio/content/tutorial/toh-pt3.md
@@ -147,7 +147,7 @@ Add an `<app-hero-detail>` element near the bottom of the `HeroesComponent` temp
 
 Bind the `HeroesComponent.selectedHero` to the element's `hero` property like this.
 
-把 `HeroesComponent.selectedHero` 绑定到钙元素的 `hero` 属性，就像这样：
+把 `HeroesComponent.selectedHero` 绑定到该元素的 `hero` 属性，就像这样：
 
 <code-example path="toh-pt3/src/app/heroes/heroes.component.html" region="hero-detail-binding" title="heroes.component.html (HeroDetail binding)">
 
diff --git a/aio/content/tutorial/toh-pt4.md b/aio/content/tutorial/toh-pt4.md
index b2fd356cac..73bccb5a1a 100644
--- a/aio/content/tutorial/toh-pt4.md
+++ b/aio/content/tutorial/toh-pt4.md
@@ -371,8 +371,8 @@ In the [HTTP tutorial](tutorial/toh-pt6), you'll call `HttpClient.get<Hero[]>()`
 The `HeroService.getHeroes` method used to return a `Hero[]`.
 Now it returns an `Observable<Hero[]>`.
 
-`HeroService.getHeroes` 方法用于返回一个 `Hero[]`，
-目前它返回的是 `Observable<Hero[]>`。
+`HeroService.getHeroes` 方法之前返回一个 `Hero[]`，
+现在它返回的是 `Observable<Hero[]>`。
 
 You'll have to adjust to that difference in `HeroesComponent`.
 
diff --git a/aio/tools/translator/dict-latest.json b/aio/tools/translator/dict-latest.json
index 104980d623..0cdc42aa08 100644
--- a/aio/tools/translator/dict-latest.json
+++ b/aio/tools/translator/dict-latest.json
@@ -40808,7 +40808,7 @@
   {
     "key": "YOUUPDATETHEBEFOREEACHTOFINDTHATELEMENTWITHASTANDARDHTMLQUERYSELECTORANDASSIGNITTOTHEH1VARIABLE",
     "original": "You update the `beforeEach` to find that element with a standard HTML `querySelector`\nand assign it to the `h1` variable.",
-    "translation": "你要修改 `beforeEach` 来使用标准的 HTML `querySelector` 来找到钙元素，并把它赋值给 `h1` 变量。",
+    "translation": "你要修改 `beforeEach` 来使用标准的 HTML `querySelector` 来找到该元素，并把它赋值给 `h1` 变量。",
     "sourceFile": "/Users/twer/private/GDE/angular-cn/aio/content/guide/testing.md"
   },
   {
@@ -50756,7 +50756,7 @@
   {
     "key": "BINDTHEHEROESCOMPONENTSELECTEDHEROTOTHEELEMENTSHEROPROPERTYLIKETHIS",
     "original": "Bind the `HeroesComponent.selectedHero` to the element's `hero` property like this.",
-    "translation": "把 `HeroesComponent.selectedHero` 绑定到钙元素的 `hero` 属性，就像这样：",
+    "translation": "把 `HeroesComponent.selectedHero` 绑定到该元素的 `hero` 属性，就像这样：",
     "sourceFile": "/Users/twer/private/GDE/angular-cn/aio/content/tutorial/toh-pt3.md"
   },
   {
@@ -51242,7 +51242,7 @@
   {
     "key": "THEHEROSERVICEGETHEROESMETHODUSEDTORETURNAHERONOWITRETURNSANOBSERVABLEHERO",
     "original": "The `HeroService.getHeroes` method used to return a `Hero[]`.\nNow it returns an `Observable<Hero[]>`.",
-    "translation": "`HeroService.getHeroes` 方法用于返回一个 `Hero[]`，\n目前它返回的是 `Observable<Hero[]>`。",
+    "translation": "`HeroService.getHeroes` 方法之前返回一个 `Hero[]`，\n现在它返回的是 `Observable<Hero[]>`。",
     "sourceFile": "/Users/twer/private/GDE/angular-cn/aio/content/tutorial/toh-pt4.md"
   },
   {