灵活性：可以用简单的方式增加、删除和修改断言模块。

Flexibility: Assertion modules can be added, deleted, and modified in a simple fashion.

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增加对话模块作为流程代理层，它用来处理伙伴用来提供BPEL流程期望的业务服务的多个流程协议。

The addition of the conversation module as a process broker layer, dealing with multiple business protocols that the partners employ to provide the business services the BPEL processes expect.

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添加更多模块来增加输出。

to increase output, add more modules.

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