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Two: check to see if this is the answer, if this is the thing I'm looking for.
是否是我们要找的元素，接着，如果不是。
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but at the same time that means I get to meet a lot people that I wouldn't normally have met.
但同时这意味着我能接触到更多的人，如果不是在布朗大学，我可能没有这样的机会。
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And we'll talk about this more, so if this is not completely intuitive, we'll see why in a second.
关于这个我们将会讨论更多，所以如果这个不是完全凭直觉获知的，我们一会儿再来看看为什么。
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B Many of you will end up getting Bs, if not at the beginning, by the end of the semester.
你们中会有很多人拿，如果不是在刚开始，到学期末也会有。
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Right. I'm going to try, if I don't make it, you know, just get somebody to pass back, whoa!
对，我会去尝试，如果结果不是这样的，你们知道的，有些人会把结果传回去的，噢！
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So the Pax Romana may have sounded great, if you were an elite, but if you were not in the elite, it may have seemed more oppressive than anything.
所以罗马和平对精英阶层听着很美好，但如果你不是精英阶层，就会觉得更像是压迫。
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Indeed, who was one the heroines of the Battle of Jericho, if not a Canaanite woman, a prostitute no less, named Rahab.
事实上，她是耶利哥之役的一位女英雄，如果不是迦南妇女，是妓女或者更甚，叫哈布。
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But it's not a very good thing if my consciousness continues to narrow and constrict beyond the threat, or beyond the hardship.
但它变得不是很好,如果我的意识继续狭窄,收紧超出威胁，超出困难。
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It's surprisingly easy to get a purple tie on eBay if you don't care much about quality."
如果你不是很在意质量的话,那么在易趣买条紫色领带是非常容易的"
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And, if they don't share equally, then the individual bonds might have different energies.
如果他们不是等价的共用，个别的键,可能有不同的键能。
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I can certainly try to write the number 13 there, but bam, my program very likely will crash if this chunk of memory was not given to me previously by the operating system and maybe it is owned by the operating system.
我当然可以在那里写下数字13，但是“嘣“,如果这块内存不是系统预先给我的,我的程序很可能会崩溃,可能这块内存,是系统本身使用的。
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If it's not, then you're going to have trouble describing it using thermodynamic properties.
如果它不是，那么用热力学性质去,描述它就要有麻烦了。
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He once said that if he wasn't the czar of all the Russians, what he would want to be would be an English admiral.
他曾经说过,如果他不是俄国人的沙皇,他会做个英国的海军上将
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It's absolutely constitutive of the ideal of freedom, of our freedom; because if we don't try everything, if we don't give ourselves an opportunity to decide for ourselves, then, of course, someone will invariably be making those decisions for us.
它也构成了自由的理念，我们的自由;,因为如果我们不是尝试过所有东西，如果我们不给自己做决定的机会，当然，总是有人会帮我们做决定。
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They would have had to be damn fools to have settled there without that being in their minds, although some of the places where they settled leave us puzzled, and have left the ancients puzzled.
如果不是这样的话,他们的脑子就是进水了,确实是有一些殖民地建立在不毛之地,这让我们和古人都很困惑
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t the new deal, s over , by the unemployment is down to close to zero by the middle of the War.
如果不是新政，If，it，wasn’,萧条结束，it’,失业率也降低到接近零点,在二战中的时候。
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If you are not fixed on seeing one particular show, if you go to Leicester Square,
如果你不是确定看一场特定的演出，如果你去莱斯特广场，
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And so if one is looking to keep protein at a certain level, then these sort of foods would get favored.
但还不是全部 而如果要使体内蛋白维持在某种水平上,那这些食物会比较受青睐
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If not, if they were entitled to whatever it was that enabled them to gather the wealth, the first principle is matched.
如果不是偷来的，如果他们,有权享有那些生产资料，那就算符合第一条原则。
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So in formalist terms, that's the way we have to understand what, if we weren't formalists, we would suppose, as I say, to be a mnemotechnical device for the purpose of communicating something about the weather in Spain. Right?
形式主义者会这样理解，但如果我们不是形式主义者，我们就会认为这个重复单纯是为了,记住西班牙的天气，对吗？
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My daddy said I had to come.
如果不是我爸非要让我。
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In almost every poem Walt Whitman wrote he seems to be fashioning himself, if not the whole of this American people, which sometimes he did call an American race, as a new Adam.
在沃尔特·惠特曼所写的的几乎每首诗中,他似乎都是在标榜自己,如果不是标榜美国人民的话,但他确实有时将美利坚民族,称为一个新的亚当
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For those of you who are not from MIT, - all MIT students have to take two semesters of physics all undergraduate students. For most students this is the most rigorous exposure to physics they've ever had In the first semester of physics, they study what I think was the basic nonunion mechanics.
如果你们不是麻省理工的学生，要知道麻省理工的所有学生,所有本科生---都得学两个学期的物理,对大多数学生来说,这是他们接受的最严格的物理学习,第一个学期他们学一些,基础力学。
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And if your answer is no, your answer will be no, then you just know you can't use this equation here.
如果不是，那就不能，你就知道，你不能用这个方程了。
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If he's not one but not the other,and if he's not both, the only other possibility is that he's neither.
如果他不是非此即彼，如果他不同时是两者，那么剩下的可能性就是，他两者都不是。
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It's not as though if you kill yourself you somehow bring it about that you've never been born at all.
不是说如果你自杀了就能够扭转,你出生了这个事实。
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Think of anything else with the density goes down when it freezes, and think about where we would be if that wasn't the case.
想想有没有其他的物质,在降温时密度会变大，再想想如果不是这种情况,我们将会怎么样。
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It's not a good thing if you're just looping and checking some condition, but never actually changing the state of the world.
这不是一个好事情，如果你只是循环,检查一些条件，但是永远不要改变世界上的国家。
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As I keep moving down, that part gets smaller, it's not always the initial length of the list, and you're right. But if you do the sums, or if you want to think of it this way, if you think about this more generally, it's always on average at least the length of the list.
等等，随着移动，剩下的部分越来越小，并不是初始那么长了，如果你算一算，或者你这么想，你考虑更一般的情况，平均下来至少是列表的长度。
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The military in the United States was a situation which brought together people who wouldn't otherwise have any contact and they liked each other.
美国军队,就是一个让很多人发生接触的地方,如果不是军队，这些人平常是没有接触的,而军队里的人都喜欢对方。
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