So, it's awkward to have to wait for a cow to get infected before you can vaccinate a population.

在给人们预防接种之前,你只有干等着,直到有一头奶牛感染了病毒才行

耶鲁公开课 - 生物医学工程探索课程节选

And my own belief is when you are not in command ; when you are humble before the thing; frankly, only then, is anything of any interest is going to happen in the arts.

我的信念是，只有当你失去了话语权,当你在艺术作品前谦卑时;,坦率地讲，只有这时，你的作品中,才会有奇迹发生。

普林斯顿公开课 - 人性课程节选

But it's absolutely essential--so the shares only mean something as a relation to their total number of shares.

这是十分必要的,所有股票只有在,和总体股本数量联系起来看时才有意义

耶鲁公开课 - 金融市场课程节选