A broker that enables a consumer to invoke a Web service asynchronously is implemented using a messaging system that USES message queues for sending the request and receiving the response.

支持使用者异步调用Web服务的Broker是通过消息传递系统实现的，消息传递系统使用消息队列来发送请求和接收响应。

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When a Web page USES Ajax, it is asynchronously sending data to and receiving data from a Web server.

当一个web页面使用Ajax时，它将异步向Web服务器发送或从其中接收数据。

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