And,it can take more than another hour to find a place to park your car.

VOA: special.2009.06.01

In the American Civil War,there was a draft, but you could avoid it by hiring somebody to take your place, if you were rich enough.

在美国内战期间，曾有过强制征兵，但是你可以让人代替你，如果你足够有钱的话。

耶鲁公开课 - 死亡课程节选

Well,I suppose it doesn't strike me as an implausible thing to say that if everybody in the troop got killed and you would have gotten killed had you been there, but instead,the person you hired to take your place gets killed, then he took your place.

我想可以这么说,如果大家都被杀死，而你若是在战场上也被杀了，但被杀的却是你花钱雇来的人，他就代替了你。

耶鲁公开课 - 死亡课程节选

You can take circles of different size and place them against your trajectory and see which one fits.

你可以做不同大小的圆周运动,然后把它们放到你的轨迹上,看哪一个匹配

耶鲁公开课 - 基础物理课程节选