Another is the admonition not to throw your pearls before swine, not to preach to those who can't hear, or won't be perceptive.

第二个是一句警句：,不要在猪的面前乱扔你的珍珠，不要对那些失聪者，和不可感化者布道。

耶鲁公开课 - 1945年后的美国小说课程节选

System of linear equations. What are the equations here? Well, I could say, you know, the number of pigs plus the number of 20 chickens equals 20, right? Because we've got 20 heads. And then what else do I have?

如何解决这个问题呢？,用线性方程式的办法来解决，等式是什么呢？你应该知道,猪的数量加鸡的数量等于,对吧？因为我们有20个头？

麻省理工公开课 - 计算机科学及编程导论课程节选