So, that's a homogeneous system, one phase. You have to know if your system is an equilibrium system or not.

所以这是个均匀系统，只有一个相，你得知道你的系统,是不是个平衡系统。

麻省理工公开课 - 热力学与动力学课程节选

You know, this, being my first semester, I'm still trying to get involved.

你知道吗，这是我来到这儿的第一个学期，所以我还在适应参与的过程中。

去学校聚会的路上 - SpeakingMax英语口语达人

If you go onto study immunology you'll learn that this is one of the most important and rapidly evolving areas of the study of immunology.

如果你要继续学习免疫学的话,你就会知道这是免疫学中,最为重要而且高速发展的一个研究领域

耶鲁公开课 - 生物医学工程探索课程节选

If you know it' s going to work, it's not an experiment.

如果在做实验时,你已经知道这个成分会起作用，那这就不是一个真正意义上的实验了。

普林斯顿公开课 - 领导能力简介课程节选

So you don't have to be a critic; you have to be strong; but you know what? You can be the average man, because this is a story about the average man.

所以你不需要当一个批评家;,但是你要坚强，知道么？,你可以是平常人,因为这是一个平常人的故事。

耶鲁公开课 - 1945年后的美国小说课程节选

How do you know that your parents, at least one of your parents satisfies the definition? Well I've reduced the problem from am I a natural born US citizen to is one of my parents a natural born US citizen?

这是一个递归的定义，你怎么知道你的父母,至少其中一个是满足天生的美国公民,这个定义的呢？,我已经把我是一个天生的美国公民这个问题？

麻省理工公开课 - 计算机科学及编程导论课程节选