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If you have seen a 3-D movie, you already know that you need special eyeglasses to watch.
VOA: special.2010.01.26
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So if you need more--bigger numbers, you just have a 16's column and a 32's column, and so forth.
所以，你需要有一个更大的数字，就采用16位，32位等等。
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To be honest, I'm not sure if you need to have gone to undergraduate
老实的说，我不确定你是否要有本科学历，
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But why do we have wisdom teeth if we often need to get them removed?
VOA: special.2011.08.10
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But if I did have two lines of code or more, I would in fact need to put those back.
但是如果我的确有两行或更多的代码，我其实应该把花括号加上。
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The Food and Drug Administration says there would be no need for special labeling if the salmon is found to have the same basic contents as other fish.
VOA: special.2010.10.05
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And we haven't talked about reactions at all yet, so you don't need to worry about the specifics of that exactly, but just that if you have this negative change in energy, you have a more stable product than you do reactant.
当然我们还没有开始讨论反应，所以你不用担心它的细节是怎么样的，你只需要知道，如果能量的变化是负值，那么你将得到一个比反应物更稳定的生成物。
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Many banks have been reluctant to loan money because they are unsure if they will need their cash reserves to cover the cost of billions of dollars in questionable loans, which are frequently referred to as toxic assets.
VOA: standard.2009.03.23
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Now, why do you need a cell mediated immune response if you have an antibody response?
为什么你还要有细胞免疫反应呢,你已经有抗体应答了啊
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"We have to improve health care in general for everyday need and everyday purposes and if it does not work on an everyday basis of course in a crisis or in a disaster it is not going to suddenly work better,".
VOA: standard.2009.10.14
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If we're going to have a way to decide between these two theories, it seems as though we need some other kind of arguments.
如果我们非要找个方法在两个理论之间取舍，那看来我们需要别的论据。
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Does it need refinement in some way?" "And if it does need some adjustment in light of the events that have taken place over the last number of months, including the election and so on, and then what are the implications of that in terms of General McChrystal's resource request?" The secretary said the United States will not abandon its core mission in Afghanistan, which President Obama described as the destruction of the al-Qaida terrorist network, because it is "critical" to U.S.national security.
VOA: standard.2009.10.23
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And if they didn't need to pay me, then I wouldn't have any income to put food on the table for my wife and children.
如果他们不雇我,我就没有任何收入,来养妻活儿
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So again, if you do a calculation where you're close enough to the ideal gas and you need to design your, if you have an engineer designing something that's got a bunch of gases around, this is a useful thing to use.
要研究近似理想气体的表现时,这个方程非常有用,下面再来看一个，对我们来说最有意思的,实际气体状态方程：,范德瓦尔斯方程。
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Well of course it's an important value to have in general that in order to be good neighbors in the world we need to understand it, we need to-- if we're going to be good citizens in the world we have to know what other people are doing and what's affecting us.
总的来说,它的重要之处在于,为了成为世界上其他国家的好邻居,我们要懂得,如果要成为世界上的一个好公民的话,我们得知道其他国家的人在做什么,是什么在影响我们
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Because this is something that could certainly have screwed you up if you didn't realize it did it, and you need to have that discipline to make sure it's doing the right thing.
因为这是一件如果你没意识到,要这么做的话,可能会令你抓狂的一件事，你需要一个规范,来确定Python做了正确的事情。
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I guess if you are an actor, you need to have creativity.
我想如果你是个演员，你要有创意。
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We have about twenty-five copies, so don't take one if you don't need it.
有25份，已经有了的同学不要再拿了。
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I think this is a case where they need help, not deserve it, but I think, again, if you had a certain level of requirements to meet sustenance, you're gonna need help, like, if you don't have food or a place to live, that's a case of need.
我认为这个例子中，他们需要帮助，但并不他们是应得的，不过我认为，如果你在一定程度上需要他人救助以维持生计，你就需要别人的帮助，比如，如果你没东西吃，没地方住，这才是需要帮助。
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stay there because who knows, there are 20 million other things I might have said, but instead let me give you the opportunity to ask questions that you would like to raise, particularly if you want to ask about how they fought, as long as we have a phalanx here we might as well use it if we need too.
你们先别走,因为,谁知道还有什么呢,我还有一肚子的东西想给你们讲,但最好还是留给你们,一些提问的机会,尤其是关于战斗的问题,讲台上正好有一列方阵可以用来讲解
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and they have information if you need to find something.
如果你需要找什么的话，他们也会给你提供信息。
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We can know this information even if we just knew that the bond was stronger, we wouldn't need to look at a graph here, because it turns out that if you have a stronger bond, -- that also means that you have a shorter bond -- those two are correlated.
我们依然可以得到上面的信息,即使我们所知道仅仅是这个键更强，我们不需要去看这个图，因为事实上如果你有一个更强的键，这也就意味着你有一个更短的键-,这两点是互相关联的。
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Well it turns out a bunch of years ago people just decided that if we have the ability to express numbers and we actually care about expressing letters of the alphabet, well we just need some kind of mapping between one and the other, ASCII and so thus was born what's generally called the ASCII.
结果证实，数年前,人们觉得如果我们,有数字表达能力,而我们真正在乎其实是字符的表达，那么我们就需要数字和字符的某种对应关系，于是就有了俗称的。
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And a few people will need to throw 2, if you feel like you have particularly good aim.
每个人一个，有些人可以扔两个。
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You really need that because if you have only one copy of something, you don't have a backup; so, you can store the one copy separately.
你真的很需要这项发明,因为要是你只有一份的话，你就没有备份;,这样的话，你就可以将副本单独留存。
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You need to know if it's an equilibrium, and you also need to know how many components you have in your system So, a glass of ice water with an ice cube in it, which is a heterogeneous system, has only one component, which is water, H2O.
要知道它是不是平衡的，你还需要知道,你的系统中有多少组分,一杯放了冰块的水，虽然它是个非均匀系统，但它只有一种组分，那就是水。
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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。
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They only need to have values if you care GetInt about getting something back from them, get int, swap you care about its value; but swap, I don't want to hear it again.
它们只需要拥有值，如果你关心,它们的返回值，你关心它的返回值，但是，我不想再得到它的返回。
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Second thing is, if you have an MIT documented special need for taking quizzes, please see John or I well in advance.
第二件事，如果你有MIT证明的,需要取消考试的特殊要求，请提前来见John和我。
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So, in terms of what it is that you need to prepare and bring with you for the exam, you need to bring your MIT ID, especially if you haven't been showing up regularly to your recitations and you aren't 100% sure if your TA knows exactly who you are, you need to make sure you have your MIT ID with you.
那么，关于你需要做哪些准备,考试可以带哪些东西，你需要带着你的学生证，尤其是如果你没有经常地参加,习题课,你不能百分之百保证,你的助教确实认识你，那么你更得确保自己到时带着学生证。
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