共有四个单元，每个单元有一个模块任务。

There are four units and one module task in each module.

youdao

但这不意味着不允许任何能够加载所有模块的全部单元测试的测试套件模块文件的存在。

That said, it does not mean that there cannot be a test suite module file that loads all the unit tests for all modules.

youdao

在方法级定义的每个单元在与其各自的模块集成之前要分别予以测试。

Each unit, defined at the method level, is tested separately before integration with its respective modules.

youdao

What we're really getting at is the idea of saying I want to have a way of grouping together information into units that make sense. So I can go back to one of those topics we had at the beginning, which is the idea of abstraction, that I can create one of those units as a simple entity, bury away the details and write really modular code.

组合成为有意义的单元,那么这就让我们回到,一开始讲的话题之一了,这就是抽象的概念,也就是我可以以一个简单的，实体的形式创建这样的一个单元，把具体实现隐藏然后写一些,真正模块化的代码,我们在以后的课程中。

麻省理工公开课 - 计算机科学及编程导论课程节选