On the other hand, if you haven't been keeping up, I hope that you won't pass so I can tell you, look, you have to do things differently.

另一方面，如果你没有继续进行，我希望你不能够过，因此我要告诉你的是，看，你做的事分别很大。

麻省理工公开课 - 固态化学导论课程节选

I mean it's keeping up on your desk. You can't even see your work.

这些糖果在你桌子上慢慢堆了起来，你都快看不见你的工作文件了。

That's all课堂 - SpeakingMax英语口语达人

You add them all up algebraically, keeping track of their sign, and that's the total force.

你再对这些力做代数加法,注意符号,就求出合力了

耶鲁公开课 - 基础物理课程节选