任意的数据源(文件、Web服务、定制存储、应用逻辑层等)。

Any data source (file, web service, custom store, application logic layer, etc).

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在低层框架上构建应用逻辑层，并用元数据文件描述模块功能。

Application logic layer was established in lower layer frame, function module was described with metadata file.

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这一部分，我们谈论页面模板的具体实现及应用逻辑与表现层的分离。

This part describes a practical implementation of page templates and the separation of application logic from the presentation layer.

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