Well, the only way you know is to do studies-- and we'll talk about how these are done in the next class-- linking dietary behavior, food intake with health.

了解这些的唯一方法是做研究,而在下一节课,我们会谈论具体过程,联系饮食习惯,食物摄入与健康

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And so you know that if only you were to read these things in the envelope, you would change your mind and no longer want to go out with her.

所以你知道,只要你看了信封里的内容，你会改变主意,不再想和她约会。

耶鲁公开课 - 死亡课程节选