From the recovered abstract structure of the legacy system (the Analysis Model associated to the system Use Cases), we must now find the components of the information system that implement it.
在所恢复的遗留系统的抽象结构中(与系统用例相关联的分析模型)，我们现在必须找到实现它的信息系统的组件。
There are two concrete use cases: Ticket Payment by Internet and Ticket Payment by Phone. These use cases are variations of the abstract use case called just Ticket Payment.
有两种具体的用例：通过因特网支付票费及通过电话支付票费，这些用例是所谓票额支付抽象用例的变种。
Service providers, rather than defining different services for different client use cases, now define a single more abstract service, which clients adjust to their individual needs.
现在，服务提供者不会为不同的客户端用例定义不同的服务，而将定义更为抽象的单一服务，客户端可以根据各自的需要对其进行调整。
Typically, it should be captured by a set of use cases and other textually represented objectives that can be meaningfully demonstrated to a user. Here is an abstract description.
典型地，它应该被一组用例和其它文本表现的、能有意义地为用户进行演示的实体所捕获。
Essential use cases are abstract, lightweight, technology-free dialogues between user and system.
本质用例描述了用户与系统间抽象、轻量级和技术无关的对话过程。
Essential use cases are abstract, lightweight, technology-free dialogues between user and system.
本质用例描述了用户与系统间抽象、轻量级和技术无关的对话过程。
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