Flex为可视组件、容器以及远程服务对象和数据模型提供了丰富的MXML扩展类。

Flex provides a rich MXML extensive class library for visual components, containers, and remote service objects and data models.

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对于远程服务，则应调用代理对象。

For remote services the proxy object would be called.

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将请求解包成对象，用来调用远程服务实现。

Unmarshalling the request into objects that can be used to call the remote service implementation.

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