diff --git a/public/docs/ts/latest/guide/testing.jade b/public/docs/ts/latest/guide/testing.jade
index 096fa98e2e..2ea6c0ee6a 100644
--- a/public/docs/ts/latest/guide/testing.jade
+++ b/public/docs/ts/latest/guide/testing.jade
@@ -3107,9 +3107,12 @@ a(href="#top").to-top 回到顶部
 #atu-apis
 :marked
   # Angular Testing Utility APIs
+  # Angular测试工具API
 
   This section takes inventory of the most useful Angular testing features and summarizes what they do.
 
+  本节将最有用的Angular测试功能提取出来，并总结了它们的作用。
+
   The Angular testing utilities include the `TestBed`, the `ComponentFixture`, and a handful of functions that control the test environment.
   The [_TestBed_](#testbed-api-summary) and [_ComponentFixture_](#component-fixture-api-summary) classes are covered separately.