还有一门课我很感兴趣，那就是数码摄影课。

There's one more class I'm interested in—that's the digital photography class.

youdao

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

还有一门课程我不喜欢，却又终得通过，那就是经济学。

Another course I didn't like, but somehow managed to pass, was economics.

youdao

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

You'd be wasting your time, wasting your money here, so don't do this if you find at the end of this you've got sixteen, seventeen, eighteen of these correct.

你是在浪费你的精力和金钱,所以如果发现你在小测验最后,已经能够答对百分之七八十,那就不要选这门课了

耶鲁公开课 - 聆听音乐课程节选

All right, turn them off. If they have to make noise as you turn them off, turn them off, but that's it. So, when you walk through that door, it's an act of free will.

好了，把它们关掉，如果一定要发出声音,当关机的时候，也要关机，就这样，当你走进那扇门，这是自由意志的选择。

麻省理工公开课 - 固态化学导论课程节选