An insurance policy--the concept is very simple, we could talk about fire insurance or life insurance.

保单的概念其实很简单，我们可以谈谈火灾保险，或者人寿保险。

耶鲁公开课 - 金融市场课程节选

I actually love cutting Asian hair. It's like really easy and fun

我其实很喜欢剪亚洲人的头发。又简单又好玩，

我的梦想是当发型师 - SpeakingMax英语口语达人

Right now at this point in our course, whenever you have a problem where there is some body and someone says, "Write all the forces on it", what you have to do is very simple.

现在在我们这个课程里,如果你遇到一道题目,题目给了你一个物体,并要求你,"写出该物体所受的所有力",你要做的其实很简单

耶鲁公开课 - 基础物理课程节选

Got a simple square procedure,.

其实是一个很简单的求一个数的平方的过程。

麻省理工公开课 - 计算机科学及编程导论课程节选