We start the design of this service provider by creating a system use case that defines its requirements and a component called Invoicer that realizes the use case.

我们对服务提供者进行的设计，首先创建一个定义其需求的系统用例，以及一个被称作 Invoicer 的实现该用例的 组件。

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"Everybody in the business realizes that you have to make an effort to bring up the quality and value, but most of all the design," Mr. Panichgul said.

“这一行业的每个人都认识到，你必须努力培育品质和价值，但是最重要的是设计，”Panichgul先生说。

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We start the design of this service provider by creating a system use case that defines its requirements and a Participant called Invoicer that realizes the use case, as shown in Figure 6.

在开始这个服务时，我们创建一个定义其需求的系统用例，以及一个叫做 Invoicer 实现用例的参与者，如图 6 所示。

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