在第一单元，我们学习了如何介绍某人自己。

In the unit one, we learned how to introduce oneself.

youdao

他花了大量时间才记住了这一单元的单词。

Remembering these new words of this unit cost him plenty of time.

youdao

PowerHA把资源组当作单一单元处理。

PowerHA handles this as a single unit.

youdao

And I end up going back and doing unit testing anyway, to try and figure out why it doesn't work. So over the years, I've just convinced myself I might as well start where I'm going to end up.

第一次从来不会正常运行,因此无论如何我还要回头去做单元测试,找找哪儿出错了，因此经过这么多年，我已经说服自己既然一定要做单元测试,那么还是一开始就做最好了。

麻省理工公开课 - 计算机科学及编程导论课程节选

And as I'm going to do many times in 3.091, I'm going to start a unit like this with a history lesson.

在3。091这门课上我会重复很多次，我会像现在一样以一个历史的故事,来开始新的一单元。

麻省理工公开课 - 固态化学导论课程节选

There's unit testing, where we validate each piece of the program independently.

一种是单元测试，也就是,分别验证程序中的每一个独立部分。

麻省理工公开课 - 计算机科学及编程导论课程节选