我们都知道什么是设计模式。

We all know what is design pattern .

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设计指导部分解释了什么是模式元素，以及与这些元素相关联的替代和权衡。

A design guide section explains what the elements of the patterns actually are, and the alternatives and trade-offs associated with these elements.

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由于JSF框架是根据模型-视图-控制器(MVC)模式设计的，我们应该首先考虑视图中要显示什么数据。

Since the JSF framework is designed following the Model-View-Controller pattern, we should first consider the data which each view will display (the Model).

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