我们以创建RESTful APIs为例的原因是许多组织都已经有其内部的SOAP服务，只需要向外部暴露RESTful的服务。

We use the example of creating RESTful APIs because many organizations have internal SOAP services and need to expose RESTful services externally.

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因为肺要处理空气，他们就变成了经常暴露在外部环境中的唯一的内脏器官了。

Since the lungs process air, they are the only internal organs that are constantly exposed to the external environment.

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依赖于DAO的商业组件只对他的客户端暴露一些非常简单的DAO外部接口。

The business component that relies on the DAO USES the simpler interface exposed by the DAO for its clients.

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