中介流使用的初始线程请求响应，并等待该服务的响应。
The original thread used by the mediation flow requests the response and waits for the response from the service.
客户端接收响应后，或者已提供响应，客户端继续在初始线程上处理(参见图2)。
After the response is received by the client, or if the response is already available, the client continues processing on the original thread (see Figure 2).
中介流使用的初始线程继续执行，但是此线程不能使用从被调用的服务返回的任何响应。
The original thread used by the mediation flow continues, but any response returned from the invoked service isn't available to this thread.
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