笑的必要条件是有另一个人存在。

The requirement for laughter is another person.

youdao

如果外星人存在，他们会在哪里呢？

If aliens exist, where are they?

youdao

那张纸是证明一个人存在的法律证明。

That piece of paper is legal proof that an individual exists.

youdao

That they exist is a proof that American ideals are not the tawdry pretenses they are so often accused of being.

或许这类人的存在,正证明了美国式理想并非无可挑剔,或者说它也在经受着现实的折磨，“

耶鲁公开课 - 1945年后的美国小说课程节选

At this point in the story, perhaps the view is that all know of God even if they ignore him.

从这点来看,即使每个人都忽略上帝，但都知道上帝的存在。

耶鲁公开课 - 旧约导论课程节选

Couldn't that be a kind of existence that would be forever enjoyable and yet it wouldn't be a rat-like existence?

那样的存在难道不是让人永远享受的,而且并非老鼠般的存在？

耶鲁公开课 - 死亡课程节选