PS we've already gone through anti-miscegenation kinds of restrictions on marriage. -Yes.

而且，我们已经经历了“反对种族通婚法“这样的事,那是对于婚姻的一种限制，-是的。

普林斯顿公开课 - 人性课程节选

There's this whole sense that the thing is precarious and you'd better kind of mind your Ps and Qs, or whatever the expression is, and be a good person or this whole thing could kind of be literally flooded away.

从这个场景中可以看出堤坝相当不稳定,你最好想想干过什么缺德事儿,或者捅过什么篓子之类的,总之得做个好人,否则,这整个城市就可能真会被大水冲走

耶鲁公开课 - 欧洲文明课程节选

But you can look at manuscripts of the early eleventh century and see people singing Ps and Ls and Os and Ms and things like that.

但是大家可以看看,十一世纪初的手稿,可以看到那时有人在唱P,以及L,O和M之类的

耶鲁公开课 - 聆听音乐课程节选

Why don't we sing Ms and Os and Ps today?

现在我们为什么不唱M,O和P

耶鲁公开课 - 聆听音乐课程节选