那么散度定理究竟讲的是什么？
这会使他们更容易听明白你讲的是什么，同时他们也会觉得你的演示很有趣。
It will make it easier for them to hear what you are saying, and they will find your presentation much more interesting.
当然，那些受过教育，了解一些科学知识的人，都能够大体上知道爱因斯坦，牛顿和达尔文讲的是什么。
Of course, educated people who know about science know roughly what Einstein, Newton and Darwin said.
我很好奇，在当时我是一名助教，那时我肯定是一个怪胎，我真的不知道，这样的课上讲的是什么东西。
I was curious; I was even a user assistant at the time, I was certainly a geek at the time and yet I had no sense really of what actually went on in a classroom like this.
胡老师非常有责任心，每一次上课都要复习上一次教的课文，然后就请几位同学回答这篇课文主要讲的是什么？
Mr Hu very responsible, each class should review of the text, and then last several students please answer this text mainly speak of is what?
我们这周要讲的是，其他解读经文的方式是什么？
What we're going to talk about this week is, what are other ways to read these texts?
某天，有一堂课讲的是通货膨胀对国家财富的缩水效应。他在教室里四处走动，边走边问：“是什么引起了通货膨胀？”
One day, in a class about inflation's corrosive effect on national wealth, he went around the room asking, "What causes inflation?"
而科学家说什么，意思就是什么（说一是一， 说二是二）。换句话说，他讲的是真理，可以用公式表明如下：1+1=2。
A scientist says what he means , that is to say , the truth , which may be formularized as 1+1=2.
而科学家说什么，意思就是什么（说一是一， 说二是二）。换句话说，他讲的是真理，可以用公式表明如下：1+1=2。
A scientist says what he means , that is to say , the truth , which may be formularized as 1+1=2.
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