Then you put something else that you know in your mind, which is that the highest point is the point when it's neither going up nor coming down.

然后你就想到了些东西,也就是说,最高点,就是那个既不上升也不下降的点

耶鲁公开课 - 基础物理课程节选

You've got to make sure that if you explain to others how to do this problem, then somebody else contributes to something else, but you know what everybody contributed in the end.

你得能保证,如果你和别人解释了题目的解法,然后另一个人对别的题目又有独到见解,最后你知道每个人都没有浑水摸鱼

耶鲁公开课 - 基础物理课程节选

So the idea is, any candidate who stands in this election, you know who that candidate is, you know whether they're right wing or left wing, so they can't tell you they're something else.

意思是,选举中的任何候选人,你知道他们是谁,你知道他们是左派还是右派,所以他们不能说他们在别的立场上

耶鲁公开课 - 博弈论课程节选