Thing I've got a little procedure that could do that, but you know the simplest thing I could do is to say well, gee, wait a minute, why don't I just check to see if these are the same thing?

这两个点是同一个点么？,我已经写了一小块代码，可以提供这个功能,但是你知道的我可以做的，最简单的事情就是说好，嗯？,等等，我为什么不直接去看看,这两个东西相等不相等呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

Because these mixed second derivatives are the same thing.

因为这两个混合二阶偏导数,是相等的。

麻省理工公开课 - 热力学与动力学课程节选

These are not necessarily the same thing.

它们不一定相同。

耶鲁公开课 - 新约课程节选