Each use case is represented by an oval, and labeled with a declarative statement that describes what action the use case is intended to perform.
每个用例都由一个椭圆形代表，用描述这个用例将要执行什么样的行为的说明型陈述进行标注。
It is fair to say that labeling a loop is the only useful way that a labeled statement can be used.
它是公平地说，标签一个循环是唯一有用的方式，可以使用标记语句。
It is fair to say that labeling a loop is the only useful way that a labeled statement can be used.
它是公平地说，标签一个循环是唯一有用的方式，可以使用标记语句。
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