Comes to mind, what happened, even foot-binding, that was something very common practice, basically erased within a generation.

突然想到了缠足这件事，这曾经是很常见的事情，而随着时代的变迁，它也已经淡出历史了。

普林斯顿公开课 - 人性课程节选

So that when he says that citizens are held together by ties of common affection he means something very specific.

所以当他们说到公民是由,共同感情的关系所团结在一起,他所指的是非常明确的东西。

耶鲁公开课 - 政治哲学导论课程节选