The Use-Case Model is derived from the Vision.
用例模型源自于前景。
The Use-Case Model in turn is the source for the subsequent Use-Case Specifications.
而用例模型又是随后的用例规格说明的来源。
For example, if a Use-Case Model is referenced by the contents of multiple projects, it should not reside in any of those referencing projects.
举例来说,如果一个用例模型被多个项目的内容所引用,那么它就不应当存在于任何一个引用项目中。
Use-Case Model (almost 100% complete)?
用例模型(几乎100%完成)?
This doesn't mean that the Use-Case Model can only contain elements from the Vision.
这不意味着用例模型只能够包含来自于前景的元素。
Use-Case Model (about 80% complete, depending on iteration goals).
用例模型(大约80%完成,取决于迭代目标)。