"We've been warning about this for two and a half years." "There really isn't a good reason for physicians to continue to prescribe the drug.

VOA: standard.2010.03.02

Moreover there really isn't a typical student in this course.

此外，修这门课的学生中也没有哪一个是典型的代表。

哈佛公开课 - 计算机科学课程节选

But the question isn't really, is there something you could do to a human being ? so that he'd be happy, or at least enjoying himself, forever?

但问题并非，是否有办法改变人类,让他快乐或起码永远享受自己？

耶鲁公开课 - 死亡课程节选