Once we can do that we can go on and say okay, what actually is a wave function, but first we need to know how to describe which ones were talking about.

我们就可以继续并说波函数到底是什么,但首先，我们需要知道，如何描述,我们说的,是哪一个波函数。

麻省理工公开课 - 化学原理课程节选

When you go into a restaurant now, unless you want to go look at a board on the wall or get a pamphlet that may be hard to find, or go to the website, it's going to be pretty hard to know what you're eating in those foods.

现在当我们去餐馆吃饭时,除非看一看墙上的菜单板,或者是去翻往往很难找到的宣传册,再或者去网站查看,否则很难知道,我们在进餐时到底摄入了些什么成分

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选