On the stair leading up into the disinfectant-smelling twilight of a rooming house, she saw an old man huddled, shaking with grief she couldn't hear.

登上梯子，在一间散发着,消毒水气味的昏暗公寓里，她看到了一个老人缩成一团，以一种他无法感受的哀伤颤抖着。

耶鲁公开课 - 1945年后的美国小说课程节选

So look, why am I justified in believing in germs, various kinds of viruses that I can't see, or bacteria or what have you, that I can't see?

所以,我为什么相信微生物,相信各种肉眼无法看到的病毒,细菌等诸如此类我看不到的东西确实存在

耶鲁公开课 - 死亡课程节选

They're all about things you can't see.

它们都在研究人们无法看到的东西。

耶鲁公开课 - 心理学导论课程节选

We can't observe souls.

我们无法看到灵魂

耶鲁公开课 - 死亡课程节选