其目标行为被定义为一个允许的消息交换序列的家族，并应由系统具现化。

The target behavior is specified as a family of permitted message exchange sequences, which should be realized by the system.

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实际上，SOAP中交换的消息只是包含用于进行计算的序列化信息的XML文档，并没有语义方面的意义。

In reality, the message exchanged in SOAP is just an XML document that contains the serialization information for computing without the semantic significance.

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序列图通过对代码的反向工程可以展示出方法中所发生的一切，还能以可视化的形式展示出交换的对象与消息。

The sequence diagram shows what happens inside of a method by reverse engineering the code and visually displaying which objects and messages are exchanged.

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