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OK. Now, last thing about variables, and then we're going to start pushing on this, is where can you use them?
好，关于变量的最后一件事，然后我们就要，结束这个话题了，这个问题就是在什么地方可以应用变量？
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Use this pattern whenever you want to find out about the timing of an event in the past, present, or future.
当你想知道过去、现在或者未来某件事发生的时间时，你都可以使用这个句型。
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Well I've only been tell you a few things about it right now and actually I can illustrate by very examples.
我只是告诉了你们几件事,实际上我可以通过例子来解释。
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It was one thing for the Lady to imagine -- you know, crazy as it was, for the Lady to imagine -- a rescue squad of angels to zip to her aid at the first hint of a physical assault.
这是一件令小姐想象的事，你可以看出，让小姐去想象很疯狂,一个天使救援队会在她做出第一个被侵犯暗示的时候去救她。
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Another very unique thing for China is that, for this chart at the bottom, 0 you can tell that there are more than 700,000 engineering graduates each year.
另一件在中国特别的事情是，从图表底部，可以看出每年有超过70万的0,工科毕业生。
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So we can think about something I mentioned last time, which is when we're thinking about chemistry and what's really interesting in terms of chemical reactions, it's mostly valence electrons we're talking about, those are the ones that tend to be involved in chemical reactions.
我们可以考虑一下我上次提到过的一件事，那就是如果我们讨论化学,以及什么是化学反应中,真正令人感兴趣的东西，我们讨论的几乎都是价电子，它们才是在化学反应中,真正起作用的部分。
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I still get nervous before every single lecture, which is actually a good thing. But it's managable.
每次上课前，我仍会感觉紧张，其实这是件好事，它可以控制。
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Second thing we saw is, that using this as a computation, I can return multiple values.
我们看到的第二件事是把它用作计算,我可以返回多个值。
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So that each man practicing his own which is one, will not become many but one.
所以一个人可以专精于一件事，而非多件。
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Another thing you can do is you can find the speed here.
你能做的另一件事就是你可以求出这里的速度
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There's one more thing that we can do.
我们还可以再做一件事。
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So it's kind of... it's nice that you can choose because I feel like you have a better time in class.
可以自己选课是件很好的事情，因为这样你在课堂上感觉会更好。
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It can be used to mean one or two things.
这个句型可以用来表达一两件事。
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Now you could do a similar sort of thing, but instead of having a candle, you have a paddle wheel, and the paddle wheel is spun by a weight that's dropping from here to here.
那接下来可以做一件类似的事，但不再是蜡烛，我们将它换成一个桨轮，桨轮末端拴一个重物,它可以从这掉落到这。
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One of the interesting things about London Bridge is that it's now no longer in London, it's in Arizona, you can see a palm tree here.
一件关于伦敦桥的趣事是,伦敦桥现在已经不在伦敦了,它在亚利桑那州,你们在这儿可以看见一棵棕榈树
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There are a couple of copies of this on reserve in the music library and you can go over there inside of Sterling memorial Library and do the listening there if you want, but one way or another you've got to get a hold of this.
斯特林纪念图书馆里有一些拷贝件,你可以在心血来潮时,去图书馆里做音乐欣赏,总之你一定得去听
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So one of the things that the Allies very specifically wanted to do in World War II was to hijack one of these devices, take it from a U-boat because if they had this physical machine, certainly can they start decrypting then the German messages.
所以同盟国在二战中想做的一件事,就是劫持其中一个装置，携带在U型潜水艇中，因为如果他们拥有了这种物理装置，他们就可以解码,德国人的密文。
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I could maybe buy one before we go.
在我们出发前，我也许可以去买一件。
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or the owner could go through several coats, but still at some point, the owner is going to die as well.
或者主人可以穿坏好几件大衣，但是在某一刻，主人依然会去世。
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Now the last thing is that because the neutron has no net charge, we can change neutron number.
现在，最后一件事是,因为中子没有净电子，我们可以改变中子数。
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Just to amuse yourself, not for any kind of punitive think-about-the-exam exercise, but it would be fun to take these categories and think about these other countries, particularly those who were absolute states, other large important states in Europe and see to what extent you have these factors there.
我们可以做件有趣的事,纯粹为了娱乐,不是为了考试练习,即用同样的方法分析其他国家,特别是那些绝对主义国家,以及其他重要的欧洲大国,看看这些因素对政治结局的影响程度
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you can really take in each piece.
你是真的可以领会每件艺术品的。
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So you will use "it depends on" in a sentence when you're not sure of something is going to happen.
当你不确定某件事是否会发生时，你就可以使用“It depends on”句型。
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PROFESSOR: All right. Good. So we can fully believe what our calculations were now, which is a nice thing to do.
教授：好了，我们现在可以,完全相信我们的计算结果了，多么美妙的一件事。
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So thankfully, you can do multiple things at once in a program because of what we'll call threads.
因此，谢天谢地，我们在一个程序中可以,同时做几件事情,而每件事情被称为一个线程。
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Right, one the things you can see now is, we start building up classes, we get these methods.
实际上是相等的，好，你们现在，可以明白的一件事情是。
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She's done fantastic work, showing how people who help-- whether it's helping five extra acts during the week-- it can be more; doesn't have to be restricted to five-- or people who help five extra acts during one day, it's actually contributing to their wellbeing.
她很好地，证明人们-,不论是在一周内多做五件好事-,可以更多;,不必局限于五件-,或者人们在一天内多做五件好事，都能让他们更幸福。
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Here's an example where we'd like to make insulin, or having the insulin gene would be useful, but if we could take the insulin gene and make many copies of the insulin protein that would be a very useful thing.
例子就是我们人工制造胰岛素,胰岛素基因就很有用,但如果我们可以用胰岛素基因,复制很多胰岛素蛋白,这将会是非常有裨益的一件事
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And again, I want to point out that a molecular orbital, we can also call that a wave function, they're the same thing.
同样，我要指出的是,一个分子轨道，我们也可以叫它波函数，这是一件事情。
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The other thing is that we can re-write our h c n in terms of bonds.
还有一件事是我们可以用键的形式来表示氰化氢。
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