但直到我发现了它，我想我再也不能还清债务了。

Until I discovered it, I thought I'd never get out of debt.

youdao

直到我从后面叫她之后，她才发现了我。

She didn”t find me until I called her from behind.

youdao

马拉笑着直到她看到我的手指停住了，就像我发现了什么东西。

Marla laughs at this until she sees my fingers have stopped. Like maybe I've found something.

youdao

And my plan was going along fine until something happened, and what happened was that chemistry was just way more interesting than I anticipated.

但我觉得最好在第一学期就把化学课选了,所以我就这么干了,我的计划一直都很顺利,直到我发现化学比我想象中的要有趣的多。

麻省理工公开课 - 化学原理课程节选