我们可以使用称为双重分发的模式将变化推入子类中，通过这种方式，我们不需要破坏现有的接口定义。

We can use a pattern called Double Dispatch to pull out the variation into the subclasses in such a way that we don't break existing interface contracts.

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AXIOM分发版中包括这些接口的几种不同的专门实现。

The AXIOM distribution includes several different specialized implementations of these interfaces.

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系统具有高度可伸缩性，统一的管理平台，灵活的内容分发子系统，广泛的硬件、应用和内容支持，丰富的接口等特点。

The system is highly expandable. Also, it has uniform management platform, flexible content distribution system, widespread support of hardware, application and content, rich interface and so on.

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