Why are people living longer than they did just a few hundred years ago?

为什么现在的人,比仅仅是几百年前的人活得更久

耶鲁公开课 - 生物医学工程探索课程节选

Not only is it inevitable that you're going to die; not only do some people live longer than others, you don't know how much more time you've got.

你会死去这不仅是不可避免;,不仅有些人活得比另一些人久，你也不知道自己还剩下多少时间。

耶鲁公开课 - 死亡课程节选