如果客户机需要从服务器获得股票报价，则将向服务器发送请求消息，服务器将随后向客户机发送一条响应消息。
If a client needs to get a stock quote from the server, it sends a request message to the server, and the server sends out a response message to the client.
Web 客户端软件将会只需向代理（Broker）请求一组特定情形下的报价，然后将结果展示给用户。
The Web client software would simply ask the Broker for quotes for a particular set of circumstances, and then present the results back to the user.
电话销售，向客户解释有关网页设计项目内容，提供报价、草拟服务合约、建议书等。
Telephone sales to explain to customers, the website content design projects, providing Price, drafting services contract, such as proposals.
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