zh-trans: add aggregation-layer.md (#11368)

* zh-trans: add aggregation-layer.md

zh-trans: add aggregation-layer.md

* Update aggregation-layer.md

* Update aggregation-layer.md

content/zh/docs/reference/glossary/aggregation-layer.md

@@ -1,4 +1,20 @@
 ---
+title: 聚合层
+id: aggregation-layer
+date: 2018-10-08
+full_link: /docs/concepts/extend-kubernetes/api-extension/apiserver-aggregation/
+short_description: >
+  聚合层允许您在自己的集群上安装额外的 Kubernetes 风格的 API。
+
+aka: 
+tags:
+- architecture
+- extension
+- operation
+---
+
+<!--
+---
 title: Aggregation Layer
 id: aggregation-layer
 date: 2018-10-08
@@ -12,9 +28,19 @@ tags:
 - extension
 - operation
 ---
+-->
+
+<!--
  The aggregation layer lets you install additional Kubernetes-style APIs in your cluster.
+-->
+
+聚合层允许您在自己的集群上安装额外的 Kubernetes 风格的 API。
 
 <!--more--> 
 
+<!--
 When you've configured the {{< glossary_tooltip text="Kubernetes API Server" term_id="kube-apiserver" >}} to [support additional APIs](https://kubernetes.io/docs/tasks/access-kubernetes-api/configure-aggregation-layer/), you can add `APIService` objects to "claim" a URL path in the Kubernetes API.
+-->
+
+当您配置了 {{< glossary_tooltip text="Kubernetes API Server" term_id="kube-apiserver" >}} 来 [支持额外的 API](https://kubernetes.io/docs/tasks/access-kubernetes-api/configure-aggregation-layer/)，您就可以在 Kubernetes API 中增加 `APIService` 对象来  "申领（Claim）" 一个 URL 路径。