And so it really, not the course but the idea for the course, was an evolution three years four years ago, really, when I was involved in something called the Civic Values Task Force, which was started by Princeton Project 55.

所以说，不是这个课程,而是这个课程的设想，是在三四年前形成的，当时我参加了,公民价值专责小组，由普林斯顿大学55工程发起。

普林斯顿公开课 - 人性课程节选

Oh, that goes actually way back time when we were like little kids like, four years old,

哦，那其实要追溯到我们是小孩子的时候了，四岁的时候，

和朋友一起逛洛杉矶 - SpeakingMax英语口语达人

We begin to know more about three or four hundred years down the road, when there appear buildings and settlements in the world later inhabited by the Greeks, as we know, to which we give the name Mycenaean.

约三四百年之后当这块希腊人聚居的土地,出现了建筑和住宅群,我们才开始对它有了更多的了解,并将其命名为今天人人皆知的"迈锡尼文明"

耶鲁公开课 - 古希腊历史简介课程节选

What I would like you to do is to remember this and four years from now, when most of you are ready to graduate, if that one person in here would email me okay?! and let me know who it is, okay?

我希望你们,记得做的是四年后，当你们大部份人准备毕业时，那人能写封电邮,让我知道他／她的大名？

耶鲁公开课 - 政治哲学导论课程节选