And in terms of equations that we use, it's sometimes easier to plug in the fact, since momentum is equal to mass times velocity.

在我们使用方程这方面，事实上有时是很容易代入的，因为动量等于质量乘以速度。

麻省理工公开课 - 化学原理课程节选

It's very simple to use. Let's look at how we can use this.

这个句型使用起来也很容易。下面我们来看一下如何使用这个句型。

I have 课堂 - SpeakingMax英语口语达人

They're pretty impressive looking. But they would be big, but still that would be a lot easier to transport and handle than a whole box or closet full of scrolls.

看起来觉得不可思议，它们虽然很厚，但它们仍然比较容易携带使用,相对于装满卷轴的箱子或书橱来说。

耶鲁公开课 - 新约课程节选