And all this is, is saying that when you take a mixed second derivative, it doesn't matter in which order you take the two derivatives.

麦克斯韦关系的本质是,当你考虑混合的二阶导数时，求导的顺序不影响最后的结果,现在，我们利用这些关系。

麻省理工公开课 - 热力学与动力学课程节选

It can't be that he's got mixed together memories of growing up in France and memories of growing up in Detroit.

他不可能拥有混合的记忆，既有在法国长大的回忆,也有底特律长大的回忆。

耶鲁公开课 - 死亡课程节选

Restriction enzymes have names, The names all look - they're all italicized and they're capital letters and small letters so that they won't be easy for you to understand, but they are - if you know the nomenclature, easy to understand.

限制性内切酶有自己的名字,名字看起来都很--,都是斜体的,大写小写字母混合,你们不太容易理解,但它们都是--如果你懂命名法,是很容易理解的

耶鲁公开课 - 生物医学工程探索课程节选

And yet the concepts go into my interests and people, they are literary and it's a mixture of the two that when I'm looking and if I'm successful - which is, not very much amount of time, I put into my writing, so this is something worth exploring.

这些概念成为我兴趣的一部分,人是文学的,是二者的混合,当我的观察卓有成效时,-这种时候不常见，我就将观察记述下来，这是值得探究的。

麻省理工公开课 - 电影哲学课程节选