在应用程序层次结构中，对话适合于放在什么地方？

Where do conversations fit into an application hierarchy?

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这是因为Rhapsody框架执行在程序层次不能见的内存分配。

This is because the Rhapsody framework performs memory allocations that are not visible at the application level.

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在这些条件下，创建一个程序层次的设计，以显示系统是如何合作的。

In these cases, a program-level design is created to show how the systems collaborate.

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