I think you should never imagine in these real old poleis that got the thing started, that somebody said let's have a polis.

我想你一定难以想象这些城邦,在刚开始建立的时候,是某个人拍脑袋的想法

耶鲁公开课 - 古希腊历史简介课程节选

If, like you--, I think most of us picture these things up from a perspective in a corner of the room, up on the wall, looking down, kind of a fly's perspective.

我想我们中大部分人都会,从屋子一角开始想象这个画面，从墙头往下看，好像飘浮在空中一样。

耶鲁公开课 - 死亡课程节选

We don't always want to go and solve the Schrodinger equation, and in fact, once we start talking about molecules, I can imagine none of you, as much as you love math or physics, want to be trying to solve this Schrodinger equation in that case either. So, what Lewis structures allow us to do is over 90% of the time be correct in terms of figuring out what the electron configuration is.

我们并不想每次都去解薛定谔方程，而且实际上，一旦我们开始讨论分子，我可以想象,你们中没有一个人，不管你有多么热爱数学或物理，会想去解这种情况下的薛定谔方程,总之，路易斯结构能让我们,有超过，90%，的概率判断出正确的,电子排布。

麻省理工公开课 - 化学原理课程节选