我已经买好了飞机票。

I have bought my flying ticket.

youdao

史蒂文：那太好了。哦，还有，我已经买好耳塞。

Steven: That would be great. And, oh, yes. I've already bought earplugs.

youdao

我赶了早班车去伦敦，这样刚到下午我就已经买好了想买的一切。

I caught an early train to London so by early afternoon I'd bought everything that I wanted.

youdao

Do not come to your instructor and say, I've got a really good ticket but I'm leaving on the 13th.

不要去和你们的讲师说，我已经买好票了,但是我要在13号离开。

麻省理工公开课 - 固态化学导论课程节选