控制器以其抽象形式执行应用程序的逻辑。

Controllers carry out your application logic in its abstract form.

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静态部分是消息的抽象形式，它总是相同的。

The static portion is the abstract form of the message, which is always the same. It can be described in pseudocode like this.

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这样，一种新的抽象形式就能带来重要的好处。

Thus a new form of abstraction adds important benefit.

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