I have to say that Shelly Kagan is probably the best lecturer I had in my four years at Yale."

我不得不说薛立·卡刚很可能是,我在耶鲁四年所遇到的最好的演讲者“

耶鲁公开课 - 死亡课程节选

I thought London gives me enough to do for the next four years while I am studying to have a life.

我觉得在我学会在这里生活的时候，伦敦给予了我足够在未来四年里可以做的事情。

世界就是我的故乡 - SpeakingMax英语口语达人

Four years later, as of today, 76% I think we have about 76% of the Chinese search traffic.

而四年之后的今天，这个数据已经上升到。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选