Suppose that you wanted to isolate a subsystem, so that client code would have to go through an intermediary to access worker objects (this situation occurs in the Facade design pattern).

假如您希望隔离一个子系统，以使客户机代码必须通过中间媒介来访问工作程序对象(这种情况在Facade设计模式中出现)。

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Suppose that you wanted to isolate a subsystem, so that client code would have to go through an intermediary to access worker objects (this situation occurs in the Facade design pattern).

假如您希望隔离一个子系统，以使客户机代码必须通过中间媒介来访问工作程序对象(这种情况在Facade设计模式中出现)。

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