为了高效通信，双方必须能够根据协商一致的格式交换消息。

For effective communications, the parties must be able to exchange messages according to an agreed-upon format.

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通过将有趣的端点信息传送到一个文档内，您可以在通信双方任意一方主要升级和次要升级过程中保持端点定义不变。

By passing the interesting information to the endpoint inside a document, you can leave the endpoint definition unchanged across both major and minor upgrades to either side of the conversation.

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这种方法将通信双方强烈耦合到一起，因为它们都依赖WSDL来定义发送的内容和预期接收的内容。

This approach strongly couples the two sides of the conversation together because they both rely on WSDL to define what is sent and what is expected.

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