diff --git a/aio/content/translations/cn/api-plan.md b/aio/content/translations/cn/api-plan.md
index d72e79bcab..3b6ab455c0 100644
--- a/aio/content/translations/cn/api-plan.md
+++ b/aio/content/translations/cn/api-plan.md
@@ -57,7 +57,7 @@
 [x]  | core/Output  | 0.33
 [x]  | common/http/HttpInterceptor  | 0.30
 [x]  | common/http/HttpRequest  | 0.29
-[ ]  | router/CanActivate  | 0.27
+[x]  | router/CanActivate  | 0.27
 [ ]  | router  | 0.26
 [ ]  | animations/style  | 0.25
 [ ]  | common/SlicePipe  | 0.25
diff --git a/packages/router/src/interfaces.ts b/packages/router/src/interfaces.ts
index 1d10033c04..30d2d7f47f 100644
--- a/packages/router/src/interfaces.ts
+++ b/packages/router/src/interfaces.ts
@@ -17,6 +17,8 @@ import {ActivatedRouteSnapshot, RouterStateSnapshot} from './router_state';
  *
  * Interface that a class can implement to be a guard deciding if a route can be activated.
  *
+ * 一个接口，某些类可以实现它以扮演一个守卫，来决定该路由能否激活。
+ *
  * ```
  * class UserToken {}
  * class Permissions {
@@ -54,6 +56,8 @@ import {ActivatedRouteSnapshot, RouterStateSnapshot} from './router_state';
  *
  * You can alternatively provide a function with the `canActivate` signature:
  *
+ * 你还可以转而实现一个带有 `canActivate` 签名的函数：
+ *
  * ```
  * @NgModule({
  *   imports: [
@@ -87,6 +91,8 @@ export interface CanActivate {
  *
  * Interface that a class can implement to be a guard deciding if a child route can be activated.
  *
+ * 一个接口，某些类可以实现它以扮演一个守卫，来决定该路由的子路由能否激活。
+ *
  * ```
  * class UserToken {}
  * class Permissions {
@@ -129,6 +135,8 @@ export interface CanActivate {
  *
  * You can alternatively provide a function with the `canActivateChild` signature:
  *
+ * 你还可以转而提供一个具有 `canActivateChild` 签名的函数：
+ *
  * ```
  * @NgModule({
  *   imports: [
@@ -167,6 +175,8 @@ export interface CanActivateChild {
  *
  * Interface that a class can implement to be a guard deciding if a route can be deactivated.
  *
+ * 一个接口，某些类可以实现它以扮演一个守卫，来决定该路由能否停用。
+ *
  * ```
  * class UserToken {}
  * class Permissions {
@@ -206,6 +216,8 @@ export interface CanActivateChild {
  *
  * You can alternatively provide a function with the `canDeactivate` signature:
  *
+ * 你还可以转而提供具有 `canDeactivate` 签名的函数：
+ *
  * ```
  * @NgModule({
  *   imports: [
@@ -241,6 +253,8 @@ export interface CanDeactivate<T> {
  *
  * Interface that class can implement to be a data provider.
  *
+ * 一个接口，某些类可以实现它以扮演一个数据提供者。
+ *
  * ```
  * class Backend {
  *   fetchTeam(id: string) {
@@ -279,6 +293,8 @@ export interface CanDeactivate<T> {
  *
  * You can alternatively provide a function with the `resolve` signature:
  *
+ * 你还可以转而提供一个具有 `resolve` 签名的函数：
+ *
  * ```
  * @NgModule({
  *   imports: [
@@ -313,6 +329,8 @@ export interface Resolve<T> {
  *
  * Interface that a class can implement to be a guard deciding if a children can be loaded.
  *
+ * 一个接口，某些类可以实现它以扮演一个守卫，来决定该路由的子路由能否加载。
+ *
  * ```
  * class UserToken {}
  * class Permissions {
@@ -348,6 +366,8 @@ export interface Resolve<T> {
  *
  * You can alternatively provide a function with the `canLoad` signature:
  *
+ * 你还可以转而提供一个具有 `canLoad` 签名的函数：
+ *
  * ```
  * @NgModule({
  *   imports: [