And so if you see a law saying blacks have to sit in the back of a trolley car, you would say, why do you need a law?

所以如果你看到有哪条法律说黑人必须坐在电车后面，你就会说，为什么你们需要这样的法律？

youdao

So you can turn the trolley car, if you want to, onto the side track, killing the one, but sparing the five.

所以，你可以将火车开向另一条岔道——如果你愿意的话——杀死那一个工人，但救了另外五个。

youdao

I know how she met my father there, and how they nurtured a trolley-car courtship through those difficult times.

在那困难的日子里，他们在有轨电车上培育了一段恋爱史。

youdao