Facade模式使用单独的高级应用程序组件，用从属组件来服务于封装的互操作，从而简化与系统的交互。
The facade pattern USES a single high-level application component that serves to encapsulate interactions with subordinate components with the goal of simplifying interactions with the system.
需要系统管理员(如果您没有这些角色)定义组并为必须属于该组的每个人赋予从属关系。
You need the system administrator (if you are not in both roles) to define the group and grant membership to each person who must belong to the group.
你可以去上医学院，到时，这个专业的课题就从属于，设备工程系统。
You can go to medical school. And then, this is the specialty topics that pertain to the devices engineering systems.
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