From a510ed5312c0563b67754d889508a122289eb9f5 Mon Sep 17 00:00:00 2001
From: Zhicheng Wang <zcwang@thoughtworks.com>
Date: Tue, 4 Sep 2018 14:54:23 +0800
Subject: [PATCH] =?UTF-8?q?docs(API):=20=E7=BF=BB=E8=AF=91=E5=AE=8C?=
 =?UTF-8?q?=E4=BA=86=20JsonPipe?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 aio/content/translations/cn/api-plan.md | 2 +-
 packages/common/src/pipes/json_pipe.ts  | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/aio/content/translations/cn/api-plan.md b/aio/content/translations/cn/api-plan.md
index e6892037d4..70e5bb2c88 100644
--- a/aio/content/translations/cn/api-plan.md
+++ b/aio/content/translations/cn/api-plan.md
@@ -62,7 +62,7 @@
 [ ]  | animations/style  | 0.25
 [x]  | common/SlicePipe  | 0.25
 [ ]  | router/Event  | 0.25
-[ ]  | common/JsonPipe  | 0.25
+[x]  | common/JsonPipe  | 0.25
 [x]  | forms/FormArray  | 0.25
 [ ]  | common/CommonModule  | 0.24
 [ ]  | router/NavigationExtras  | 0.24
diff --git a/packages/common/src/pipes/json_pipe.ts b/packages/common/src/pipes/json_pipe.ts
index c0c2d81ee9..b6063fa4cd 100644
--- a/packages/common/src/pipes/json_pipe.ts
+++ b/packages/common/src/pipes/json_pipe.ts
@@ -14,10 +14,14 @@ import {Pipe, PipeTransform} from '@angular/core';
  *
  * Converts a value into its JSON-format representation.  Useful for debugging.
  *
+ * 把一个值转换成 JSON 字符串格式。在调试时很有用。
+ *
  * @usageNotes
  *
  * The following component uses a JSON pipe to convert an object
  * to JSON format, and displays the string in both formats for comparison.
+ *
+ * 下列组件使用了一个 `JSON` 管道来把对象转换成 JSON 格式，并以两种格式显示字符串供对比。
 
  * {@example common/pipes/ts/json_pipe.ts region='JsonPipe'}
  *
@@ -27,6 +31,8 @@ import {Pipe, PipeTransform} from '@angular/core';
 export class JsonPipe implements PipeTransform {
   /**
    * @param value A value of any type to convert into a JSON-format string.
+   *
+   * 任何类型的要转换成 JSON 字符串格式的值
    */
   transform(value: any): string { return JSON.stringify(value, null, 2); }
 }