We have a lot of potential that over time with we fix stone of voices with being part of our culture that very often these limitations are put on top of us just like the excess stone.

但是渐渐地受到外部文化压力,像多余石料一样，把我们禁锢起来了。

哈佛公开课 - 幸福课课程节选

If you want to talk about an arrow of any kind, you've got to put a little arrow on top of it.

如果你问要画什么箭头,只要在上面画个小小的箭头就行

耶鲁公开课 - 基础物理课程节选

You put it between two pieces of paper, then you write on the top one and it creates as copy on the bottom one.

你将它放在两张纸之间，然后你在上面那张纸上写字,下面那张纸上就会复印下来。

耶鲁公开课 - 金融市场课程节选