For example, if it's a use-case package diagram, then there is likely an include, extend, or inheritance relationship between a use case in one package and one in the other package.

例如，如果两个用例包图之间存在依赖，很可能一个包中的某个用例和另一个包中的某个用例之间存在包含、扩展或者继承关系。

youdao

For example, if it's a use-case package diagram, then there is likely an include, extend, or inheritance relationship between a use case in one package and one in the other package.

例如，如果两个用例包图之间存在依赖，很可能一个包中的某个用例和另一个包中的某个用例之间存在包含、扩展或者继承关系。

youdao