A kind of version of recreational sex as a reward for a lifetime of self-control.

一种休闲式的性,作为他们一辈子自控的奖赏。

耶鲁公开课 - 政治哲学导论课程节选

If you decide to buy it, it has one particular virtue and that is you end up with an excellent library of classical music that will last you for a lifetime.

如果你决定买一套,那么你将拥有一个,可以伴随你一生的,非常棒的古典音乐图书馆

耶鲁公开课 - 聆听音乐课程节选

There are cells within your body that are always in the process of division and forming new cells, and sometimes this is for a tissue where cells only have a finite lifetime.

你体内的一些细胞,始终在不断分裂,并生成新的细胞,很多时候,是在一些细胞寿命有限的组织中

耶鲁公开课 - 生物医学工程探索课程节选