And, so you propose that there is no, that this derivative is zero, and that the internal energy is given simply by this quantity.

你认为这是零，这个微分是零，内能仅仅由,这个简单的量决定。

麻省理工公开课 - 热力学与动力学课程节选

And I think that if you just focus on that even, you're going to get a lot more advanced.

我认为就算你仅仅关注这些，你也会取得很大进步的。

有这样的困难 - SpeakingMax英语口语达人

I guess it's not macho enough, John, to just, you know, you know, go off and do things by hand, you ought to just run them, but it's a valuable tool to get into, so let me do that here.

我认为这不太男人了，John，你知道的，他们仅仅是认为比起用手做来,更应该直接去运行程序，但是这确实是调试代码的非常有价值的工具，让我在这里给大家演示下吧。

麻省理工公开课 - 计算机科学及编程导论课程节选