Things that I say are going at 50 miles per hour you may say are going at 80.

在我看来速度为每小时 50 英里的物体,在你看来速度可能是每小时 80 英里

基础物理课程节选 : 耶鲁公开课

The idea of working in an office, pushing papers 70 to 80 hours a week, although as lucrative as it might be, wasn't something I felt I will be really using my own personal skill set to benefit people on a mass level.

在办公室里一周做，70到80小时的琐碎工作，虽然会很赚钱，但是这并不是,我能真正用自己的能力,去造福大众的工作。

人性课程节选 : 普林斯顿公开课

Bodies may last 20 years, 50 years, 80 years, 100 years, but people would only last an hour or, if it's every minute substitution, a minute.

肉体可能持续20年，50，80，或者100年，但人可能持续一个小时，以分钟算，或者是一分钟。

死亡课程节选 : 耶鲁公开课