我未注意他用完全相同的方法做这件事。
所有的服务实现支持同一个抽象接口,这样客户机就可以用完全相同的方法来调用它们中的每一个。
All of the service implementations support the same abstract interface, so that clients can invoke each of them in the exact same way.
So as I said, they're going to be identical in terms of making the decision that way.
因此就像我说的,如果用这种方法来判断,它们应该是完全相同的。
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