通过分析指出：简单委托—代理模型分析得到的利润分享系数偏低。

Then, we model the problem and analysis this problem through using the model.

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unmarshal() 方法也很简单，但只是因为它将所有工作都委托给 unmarshalOperator() 方法处理。

The unmarshal() method is also simple, but only because it delegates all the work to the unmarshalOperator() method.

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委托对象或者说委托方法是一个简单且功能强大的模式，在此模式中，程序中的一个对象，其行为代表另一对象，或与其一致。

A delegate object or delegation is a simple and powerful pattern in which one object in a program ACTS on behalf of, or in coordination with, another object.

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