Harmony is indeed invisible in sense Number 1, you cannot see it with your eyes, but for all that, it can be destroyed.

和声用无形的第一种解读方式理解，确实是无形的，你看不见它，但是它可以毁灭。

耶鲁公开课 - 死亡课程节选

It was clear,he was another Achilles in his own eyes, and it was for him to achieve the great deeds that I have been mentioning.

很清楚的是,他自认为是第二个阿喀琉斯,他的使命就是去获得,我一直在说的这些伟大成就

耶鲁公开课 - 古希腊历史简介课程节选

Your brain is active as if you were awake, your EEGs are similar to waking, paralyzed except for the eyes, oh, men get erections and you have dreams.

大脑处于活跃状态，像清醒时一样，脑电图也和清醒时相似，但除了眼部，全身都不会动，男人会勃起，梦境会出现。

耶鲁公开课 - 心理学导论课程节选

So those of you who haven't, don't worry, I mean this will be a bit review, but we'll see it more through the eyes of Game Theory this time, and for those of you who haven't, don't worry we're going to go through it.

如果你没学过,也不必担心,我们一起来快速回顾一下吧,但这次我们用博弈论的角度去分析,那些之前没有学过的同学,别担心,现在我们一起来看一遍

耶鲁公开课 - 博弈论课程节选