毕竟，我是有备而来的。如果我不在这里发挥自己最好的一面，那我为了什么准备和练习的？我为了什么而为难自己？

After all, I have come here well prepared. If I am not here to demonstrate what's best in me, what did I prepare and practice for?

youdao

如果我人不在这里，他们就不会那么做了。

If I wasn't here to describe it, they wouldn't do it.

youdao

如果我不在厨房吃东西或是在湖里游泳，那我一定在这里。

This is where I am if I am not in the kitchen eating or in the lake swimming.

youdao

if I could type, in order to just to get into that, in order to get into the habit.

如果我可以输入，为了不在这里陷入，为了养成这个习惯。

麻省理工公开课 - 计算机科学及编程导论课程节选