zh-trans: add platform-developer.md (#11459)

* zh-trans: add platform-developer.md

zh-trans: add platform-developer.md

* Update platform-developer.md

* Update platform-developer.md

* Update platform-developer.md

content/zh/docs/reference/glossary/platform-developer.md

@@ -1,4 +1,18 @@
 ---
+title: 平台开发者
+id: platform-developer
+date: 2018-04-12
+full_link: 
+short_description: >
+  定制 Kubernetes 平台以满足自己的项目需求的人。
+
+aka: 
+tags:
+- user-type
+---
+
+<!--
+---
 title: Platform Developer
 id: platform-developer
 date: 2018-04-12
@@ -10,9 +24,19 @@ aka:
 tags:
 - user-type
 ---
+-->
+
+<!--
  A person who customizes the Kubernetes platform to fit the needs of their project.
+-->
+
+ 定制 Kubernetes 平台以满足自己的项目需求的人。
 
 <!--more--> 
 
+<!--
 A platform developer may, for example, use [Custom Resources](/docs/concepts/api-extension/custom-resources/) or [Extend the Kubernetes API with the aggregation layer](/docs/concepts/api-extension/apiserver-aggregation/) to add functionality to their instance of Kubernetes, specifically for their application.  Some Platform Developers are also {{< glossary_tooltip text="contributors" term_id="contributor" >}} and develop extensions which are contributed to the Kubernetes community.  Others develop closed-source commercial or site-specific extensions.
+-->
+
+例如，平台开发人员可以使用[定制资源](/docs/concepts/api-extension/custom-resources/)或[使用汇聚层扩展 Kubernetes API](/docs/concepts/api-extension/apiserver-aggregation/) 来为其 Kubernetes 实例增加功能，特别是为其应用程序添加功能。一些平台开发人员也是 Kubrenetes {{< glossary_tooltip text="贡献者" term_id="contributor" >}}，他们会开发贡献给 Kubernetes 社区的扩展；另一些则开发封闭源代码的商业扩展或用于特定功能的扩展。