An actor is an initiator when its role is to set the use case in motion.
如果某个参与者的作用是启动用例，则它的角色就是启动器。
It is worth mentioning the central role played by the use-case model in this work as in any RUP-based software development project.
值得提到的是在此工作中的用例模型所扮演的重要角色与在任何基于RUP的软件开发项目中一样。
In particular, we'll pay attention to the role of perspective in use case modeling.
特别地，我们要注意在用例建模中透视图的角色。
Use case models will continue to play an important role.
用况模型必须继续扮演重要的角色。
The DITA topic map plays the role of a use case model.
DITA主题图扮演用例模型的角色。
Let us consider the previous use case where the Payroll service was secured and only users of the Payroll Auth role are allowed access.
我们看一下之前使用的案例，其中Payroll服务是安全的，只有允许PayrollAuth角色用户访问。
The servlet acts in the role of a controller, coordinating the steps needed to carry out the work of the Reserve a Vehicle use case.
该servlet以控制器的角色出现，协调预约车辆用例工作中需要完成的各个步骤。
These tasks are performed by a new role: the Use-Case Analyst (Figure 13).
这些任务由一个新的角色执行：用例分析员(图13)。
For example, Figure 11 depicts how the use-case analysis method is represented in RUP as a task performed by the role designer.
例如，图11描述的是用例分析方法作为一个角色设计者所执行的任务是在RUP中是如何表示的。
A business process role is mapped to a use case actor.
业务流程角色映射到用例参与者。
For the use case in this article, we'll build a role-based service subscription at a medical clinic called AcmeOrg.
对于本文中的用例，我们将构建一家名为acmeorg的医疗诊所中的基于角色的服务订阅。
Use interactive methods such as case studies, role-playing etc.
用互动的方式，如个案学习、角色扮演…等等。
Use interactive methods such as case studies, role-playing etc.
用互动的方式，如个案学习、角色扮演…等等。
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