Remember the rubber band on the back of that mask?

还记得面具后面的橡皮筋不？

哈佛公开课 - 幸福课课程节选

A car is just some metal, plastic, rubber.

汽车就是铁，塑胶，还有橡胶组成的。

耶鲁公开课 - 死亡课程节选

And this is where the rubber hits the road.

这是论战真正开始的地方。

耶鲁公开课 - 政治哲学导论课程节选

If you think about it like a rubber band, maybe the more we can stretch the rubber band the better; but if you stretch too far and the rubber band snaps, that's not good, that's bad.

你可以想象一个橡皮筋,也许把它伸展得越长越好,但是你把它伸展得过长,以至绷断,那就不好,那很糟糕

耶鲁公开课 - 死亡课程节选