Now, the purpose of this exercise is to give you a little bit of practice in figuring out what these quantities are.

就有这样的结论,这个练习的作用时让你们理解,这些物理量是什么。

麻省理工公开课 - 热力学与动力学课程节选

And so we'll talk about technologies like this, where they're at, what the scientific basis of it is, and how they might be useful.

我们将讨论这门技术会应用于哪些领域,它的科学原理是什么以及,如何使他们发挥作用

耶鲁公开课 - 生物医学工程探索课程节选

So the consent, here, we're coming back to our question, what is the work of consent?

再回到关于同意的问题，同意的作用是什么？

耶鲁公开课 - 公正课程节选

Again, what's the utility of the Born-Haber Cycle?

波恩哈伯循环的作用是什么？

麻省理工公开课 - 固态化学导论课程节选

Well, one way to understand what's good to eat for you is first to know a little bit about what you're eating, and that's where that daily plate exercise came into play.

要想了解吃什么好,方法之一是,首先了解一下你吃的是什么,在这里日常饮食规则将发挥作用

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

First one says, if you knew the force acting on any body, without going into what caused the force, then you may set that force equal the mass times acceleration of the body.

第一部分是,如果你知道作用在任一物体上的力,无论这个力的来源是什么,都可以令力等于质量乘以物体的加速度

耶鲁公开课 - 基础物理课程节选

What is the work of consent?

同意的作用是什么？

耶鲁公开课 - 公正课程节选