I can take you and immediately start designing batteries, because we need ions in motion, we need small ions in motion.

我可以从此让你快速起步设计电池，因为我们需要能运动的离子，我们需要能运动的小型离子。

麻省理工公开课 - 固态化学导论课程节选

And it's pretty expensive to do so because I think they know you need to do it.

这样做很贵，因为我想他们知道你需要这么做。

公共交通更方便 - SpeakingMax英语口语达人

2 7 And I'm not going to draw the rest of the tree for you here, because I drew it last time, and you don't need to see the whole tree.

从这儿我们得到了,我在这里不会剩下的树都画出来，因为我上次画过了。

麻省理工公开课 - 计算机科学及编程导论课程节选

I don't need to tell you the volume here, because you've got enough information to calculate the volume.

这里我不需要告诉你体积，因为你已经获得了足够多的信息,来计算体积。

麻省理工公开课 - 热力学与动力学课程节选

And it is really great because he actually goes through the thought process for you and describes - I need to give you one piece of background.

它非常厉害,因为他已经将思考的过程,为你们过了一遍，并描写,我需要给你们一点背景介绍。

麻省理工公开课 - 固态化学导论课程节选

Yeah, so you're asking, if for example, why do you need a booster of tetanus, because if I get exposed to tetanus wouldn't I have this rapid response?

所以你会问,举个例子来说,已经感染过破伤风杆菌的人,为什么仍然需要接种破伤风疫苗,身体不是应该马上对该病菌做出应答吗

耶鲁公开课 - 生物医学工程探索课程节选

because I'm not saying, "You need to study. You need to do this."

因为我不会说，“你必须学习。你必须做这个。”

学习靠自觉 - SpeakingMax英语口语达人

So if I try to rotate my 2 atoms, you see that I have to break that pi bond, because they need to be lined up so that the electron density can overlap.

如果我要试着转动两个原子，你会看到我必须要打破一个π键，因为他们需要连接起来,让那些电子能够重叠。

麻省理工公开课 - 化学原理课程节选

I think that's because there's a growing recognition that that's what you need to know and that the countries that are emerging successfully are those that have well developed financial institutions that are adopting the technology.

我认为这是因为在那里越来越多人认识到,这才是他们所急需的知识,并且那些成功崛起的国家,都拥有完善的金融机构,并且能够应用这些技术

耶鲁公开课 - 金融市场课程节选

Now I seem to be violating my own mantra here by just calling this variable A, but this is reasonable, I much as with four loops when you just call an incrementing variable I, because you just need an index, well, same here.

现在我好像违背了我自己的意愿,我把这个变量叫做A，但这是合理的，就像我们的for循环中，我们把一个增变量叫做,因为我们只要一个索引，这里也一样。

哈佛公开课 - 计算机科学课程节选

What is this? This is a wonderful piece of abstraction. It is saying, you don't need to know squat about what's inside the body of this function. You don't have to worry about the parameter names, because they're going to be preserved, you don't need to worry about how I'm doing it, this tells you how you can use this, in order to use it correctly. Of course, I can then close it off, and off we go.

但是这能告诉你一些信息,这是什么？,这是一段完美的抽象,它的意思是你不需要知道,这个函数的内部构造，你不必担心参数是否重名，因为它们已经被预存了,你不需要担心我如何使用它,它告诉了你你该如何操作，从而正确的使用它，当然我也可以把它关掉。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, I need to tell you how you're doing the expansion, because that's going to tell you how much energy you're wasting during that expansion.

所以我需要告诉你,膨胀是如何进行的，因为这会告诉你,在这次膨胀中,浪费了多少能量。

麻省理工公开课 - 热力学与动力学课程节选

And also I wanted to mention in terms of checking your Lewis structures, regardless of what they are, you should always go back and I had 10, and then count 2, 4, 6, 8, 10, because you always need to make sure you have the same number of valence electrons that you calculated in your actual structure.

我还想提一点关于检查,你的路易斯结构的建议，不管它们是什么，你总是应该回去检查一下,我有十个，然后数一数，二，四，六，八，十个，因为你总是需要确保实际价电子的数量,与你在结构中算出的数量相等。

麻省理工公开课 - 化学原理课程节选