你可以要求老师讲慢一点，这样你就可以理解他讲的内容了。

You can ask the teacher to speak slowly so that you can make sense of what he say.

youdao

等你到我这个年龄时，你就可以理解了。

When you reach my age, you'll be able to understand it.

youdao

所以你就可以理解瑞奇·马丁所经历过的了。

So you can just imagine what Ricky Martin was going through.

youdao

And we can simplify this expression as saying negative e squared over 4 pi, epsilon nought r squared. Epsilon nought is a constant, it's something you might see in physics as well.

也会遇到它,在这里，你可以就把它,理解为一个转换系数,我们需要做的。

麻省理工公开课 - 化学原理课程节选