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And this poem seemed like one you might find and be able to read yourself, without me there to explain it.
而这首诗似乎是一首,你们自己就可以读懂的，不用我多做解释的诗。
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That way you don't have to go to a gym afterwards , you don't have to go to Yoga,
这样你就不用下班以后再去健身房锻炼了，不用再去练瑜伽。
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Now Isaac Newton and/or Joseph Raphson figured out how to do this kind of thing for all differentiable functions.
既然牛顿和拉复生已经,指数了如何解这种可导函数,因此我们就不用太担心了。
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We don't have to just stick with carbon, we can think about describing other types of atoms as well using this hybridization.
我们不用局限于碳，我们可以考虑利用杂化轨道,描述其它类型的原子。
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They can now spend their energy on creating new ideas instead of reinventing ideas that other people have already done quite well.
创造自己的观点,而不用重新整理,别人已经阐述很好的观点。
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You take it home and you write basically an 8-page, we don't want you to run outside and do research.
回家写大约8页隔行的论文，你不用到外面做调查。
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Previously humans were to be vegetarian: Genesis 1, the portrait was one in which humans and animals did not compete for food, or consume one another.
在《创世纪》1中，早期的人类是素食主义者，描绘了一幅人类和动物,不用争夺食物，不用互相残杀的景象。
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And then this country has to work with many other nations and listen to them, not apologize, not gravel.
然后我们需要,与其他国家合作,听取他们的建议，不用道歉，不用困惑。
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One reason for this is obvious; it's cheaper not to pay people, but the other reason is more interesting.
这样做的其中一个原因很明显;,不用付钱，当然就能省点了，但另一个原因更有意思。
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In fact, once you think about it, and not all that long, you can see the answer's got to be no.
事实上,只要你想一想,不用太久,你就会知道答案是否定的
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And so instead of defining efficiency the way you've got it written there, I'm going to define what's called something different for a refrigerator which is called the coefficient of performance.
现在我们不用,效率的那个定义，我给出一个,有关制冷机的,新的定义,叫做制冷系数。
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We have the dialectic of suspense on the one hand, how will this be resolved, and inevitability on the other, "Oh, it's a folk tale, it'll be resolved, don't worry about it."
我们一方面有悬念的对立，就不可避免地会有，另一个方面，即这个会怎样解决，“哦，这是个传说，这会解决的，不用担心它“
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And one of them will be filmed, too, so that if you can't actually make any of the times not to worry, that video will go online sometime Tuesday in plenty of time for Friday's pset deadline.
其中一门课程也会被拍成录像，所以你们万一没有时间也不用担心,那个视频在周二会放到网上去,直到周五过期，这其中还是有充裕的时间的。
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Here's a way that you can do it in a test tube without using any cells by this process called Polymerase Chain Reaction.
但有一个方法可以让你在试管中完成,不用细胞,这个方法叫聚合酶链式反应
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You didn't pull the suitcase lengthwise; you pulled it widthwise, so it gave you a stable base.
你不用竖着拖行李箱;,而是可以横着拖，这样拖起来更稳。
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Okay, right it's easy because there's less cleaning, less preparation and things, right?
不用清洗餐具,所以很方便,不用准备食材之类的,是吧
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Maybe you should leave before it gets too dark, so that you don't have to walk too far.
也许你该在天黑之前就动身回去了，这样你就不用走那么远了。
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You don't have to read the notes cause you've got the sound in your ears, part of your aural memory.
你不用去看音符,因为你头脑里已经有了声音,这是你听觉记忆的一部分
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The power of linearity is F=k1+k2 if I come across f of x, y, z equals k1 plus k2, if it is a linear equation, I don't have to go and solve it all over again.
线性的威力是,一个方程，如果它是个线性方程，那么我就不用再去解他了。
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It decreases. If you're still not completely up on the periodic trends, that is stuff that's going to be on the first exam, so make sure that you're able to do this without taking too much time to think about it.
它会降低，如果你还没有完全掌握周期性规律，而这是第一次考试要求的内容，因此请务必做到不用,想太久就能做到这点。
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But if, at any point, I get to a place in the list where the thing I'm looking for is smaller than the element in the list, I know everything else in the rest of the list has to be bigger than that, I don't have to bother looking anymore.
比当前位置数组的元素要小,我也就知道后面的数肯定,也都比我的目标数要大了，我就不用再继续进行下去了,这意味着目标数不在这个数组中，我就可以退出了。
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One of the advantages of this is, that I don't have to worry about explicitly updating my variable. That happens for me automatically.
这样继续下去，这样做的一个优点是,我不用为更新变量来发愁了,程序会自动的为我进行这个操作，这一点很好。
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If you are a political--If you are running for office, you will tend to have volunteers and not necessarily pay people.
如果你要竞选政府职位，你往往会招一些志愿者，不用付他们钱的人。
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Instead of imagining lobotomizing us, turning us into rats, suppose we just say, look, the problem is really this.
这次不用额叶切除术把我们变成老鼠，问题的症结是。
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This is very easy molecule because we know exactly where to put them without even having to think, we only have one option, and we'll make a triple bond between the carbon and the nitrogen.
这个分子非常简单,因为我们知道应该把它们放在哪里,甚至不用去想，我们只有一个选择，我们将在碳与氮之间形成一个三键。
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Nano Rather than use nano on this computer, Vim I'm gonna use a program called Vim, which is just another text editor.
今天我们不用，而是用，另外一个文本编辑器。
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Jews didn't have to--they could observe the Sabbath, they didn't have to do things on the Sabbath that they didn't want to.
犹太人不必。。。可以过安息日，安息日那天他们不用做不想做的事。
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Now if you look at my derivation here, there's one spot where I could have just stopped and proven my point without going through the whole thing.
如果仔细检查我的推导过程，你会发现其实,我们不用研究整个循环过程,就可以证明我们要证的公式。
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Now you might ask, well if we did 360 here, why don't we just do 360 over here?
你们可能会问,既然我们这里用360,那么那里为什么不用360
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