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。

youdao

This is the first time that this example is using a relation as a declarative statement to define an expression (in other words, a value assignment) instead of using it for model-to-model mapping.

这是本例子第一次把关联作为一个定义表达式(换句话说，一个赋值语句)的声明性陈述来使用，而不是用它作模型到模型的映射。

youdao

This is the first time that this example is using a relation as a declarative statement to define an expression (in other words, a value assignment) instead of using it for model-to-model mapping.

这是本例子第一次把关联作为一个定义表达式(换句话说，一个赋值语句)的声明性陈述来使用，而不是用它作模型到模型的映射。

youdao