那门砰的一声给砸开了。

The door crashed open.

《牛津词典》

如果你不会说那门语言，那就有麻烦了。

If you can't speak the language, it can be a problem.

youdao

那门选修课真像大家说的那么难吗？

Is that optional course as hard as everybody says?

youdao

Those of you more comfortable, rest assured we'll start filling in some gaps before long if you're already familiar with this.

那些程度比较好的同学，我们马上来讲一下以前遗漏的问题,如果你们已经熟悉这门课，那会觉得那容易接受。

哈佛公开课 - 计算机科学课程节选

Z That was Lit Z, and it did indeed imply every other form of theory, and it was extremely rigorous and interesting, but it wasn't a survey.

这就是文学，那门课极其严格，也非常有趣，但它不是概论。

耶鲁公开课 - 文学理论导论课程节选

But, you know, any professor who stands before you should say the same thing about his or her subject. If they don't believe that, they shouldn't be teaching.

但是，你知道，所有站在你们面前的老师,可能都会这样介绍他的课程,如果他们不那样相信着，那他们就不应该教那门课了。

麻省理工公开课 - 固态化学导论课程节选