Right, OK. So what I do to open the book is to ask the reader to image that they walking past a shallow pond, maybe somewhere in the park or or university campus.

好的，我在这本书的开篇,请读者想象这样一个画面，你走过,一个浅浅的池塘，可能是公园里,或是大学校园里。

普林斯顿公开课 - 人性课程节选

When I open the blue book, the Yale guideline, the Yale catalog, it's got a page, as you all know, where it says what letter grades mean at Yale.

我打开那本蓝皮书，耶鲁指导手册，耶鲁目录，有这么一页，都见过，讲耶鲁每个评分字母表示什么。

耶鲁公开课 - 死亡课程节选