如果我摔倒了，我要怎么做？

If I fall down, what do I do?

youdao

如果我摔倒，我的腿会断，但是如果我不站起来，我会死。

My leg would hurt when I fell and when I couldn't get up I would die.

youdao

如果我摔倒了，我要怎么做？我会一次又一次地尝试，因为当我放弃的时候也就是我失败的时候。

If I fall down, what do I do? I am gonna try again and again because the moment I give up is the moment that I'll fail.

youdao

So, 13 backscattered. TAs, if you can maybe pick up these ping-pong balls for me.

把这些球捡起来，我觉得如果，我摔倒一定很搞笑。

麻省理工公开课 - 化学原理课程节选