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Obviously we don't expect you to know exactly what the distances are, but you should be able to compare them relatively.
当然我们不要求你么,要能知道具体这些位置是多少，但你们要能够相对比较它们。
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And you don't know basically if what you are being charged is necessarily the proper price.
你基本不知道你给多少车费是合适的。
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Mr. Carl Icahn: Well, it's hard to recommend how to invest at this time without knowing how much capital you have.
伊坎先生：嗯，在当今形势下,如果不知道你有多少资本,那就很难给你投资建议。
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If you did know how much time you had left, ? how would you act differently from what you're doing now?
如果你确实知道了自己还剩多少时间，你会和你现在的行为有不同吗？
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You could easily see how much of each thing is there.
你可以知道每种物质各有多少。
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R is going to be a fix number R times You don't know what it is right now.
等于一个常数 R 乘以,你现在还不知道它是多少
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Well, we certainly didn't know on day one how many times each of you was going to want to call get string, how many words a user might type when you call get string.
好的，当然我们不知道第一天你们,想要调用GetSting多少次，当你调用GetSting时，用户会输入多少单词。
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If I say x is 2, I want to know, what's the square root of 2, well if you're enough of a geek, you'll say 1.41529 or whatever the heck it is, but in general, this doesn't help you find the square root.
如果我说X等于，我想知道，2的平方根是多少，那么如果你足够书呆子你就会说,1。41529或者随便什么玩意儿，但是大体上，它不会帮你算出平方根。
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And so you're able to take... I don't know how many there are.
所以你可以做一下以前的考题……我不知道总共有多少份。
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And from that perspective it looks as though it would be better to know how much time you've got left.
从这个角度来看,你知道自己剩下多少时间似乎更好。
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I don't know how much you read about the-- right now we are going through a major financial crisis, which started in the U.S.
我并不知道你读了多少...,现在我们正在经历一个严重的金融危机,它起始于美国
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You use such and such frequencies, and which objects, and you hand him an apple and he'll say, "Oh, it must be very red," Right?
知道你用了多少多少频率的光,是哪些物体,然后你递给他一个苹果,他会说,哦,这是个很红的苹果吧,是这样吗
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When you ask for the investment rate, you want to know the truth-- how much am I really getting so they don't monkey around here.
当你问投资收益率时,你要知道,我到底能赚多少,所以他们不再偷懒
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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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Not only is it inevitable that you're going to die; not only do some people live longer than others, you don't know how much more time you've got.
你会死去这不仅是不可避免;,不仅有些人活得比另一些人久，你也不知道自己还剩下多少时间。
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You're only given the particle has acceleration a, and you are asked to find out what is x?
你只知道质点的加速度为a,你需要求出x是多少
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- On the other hand, we have to ask ourselves-- and this the question that I left us with last time- whether it would really, all things considered, be better to know how much time you had.
另一方面，我们不得不问自己-,这是上一次课我留下来的问题-,从全面考虑，知道你还有多少时间，是不是会更好。
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And again, to move back and ask ourselves a larger question, would knowing how much time you have be something that would allow you to actually embrace those choices, ? or would it instead just be a burden?
再一次，回到原题，问我们自己一个更大的问题，知道自己还有多少时间,是会让你实际上接受这些选择呢，还是只是一个负担？
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There are absolutely going to be times where you're running a program where the programmer, say you, didn't possibly know in advanced how much RAM the program was going to need.
它们总是在,程序员运行程序的地方，你可能预先不知道那个程序,需要多少内存。
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This calculation wasn't done very frequently; that's just if you had one of the satisfactions of knowing how much money you were making.
这个运算并不经常用,除非你非得知道,自己会赚多少钱
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Because you don't know how much more time you've got-- You can make a guess based on statistics, but as we saw, there's wild unpredictability.
因为你不知道你剩下多少时间-,你可以根据数据进行猜测，但是我们都知道，不可预见性太难把握。
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Anyone? How many times can you tear a 4 billion page phone book in half?
谁知道？,40亿页纸每次对半撕，你能撕多少次？
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This is useful especially when we get to details like forensics and looking at data on a hard drive, - 'cause if you don't know how much store-- how many bits are composing your file, you're never gonna recover that data or be able to access what you're looking for.
这是很有用的，尤其是在法庭上,查看硬盘驱动器里的数据时，如果你连-,文件有多少比特都不知道，你如何去恢复数据,获取你想要的信息呢。
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It just needs to know how many bytes of memory do you want?
它需要知道你想分配多少字节的内存？
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Would you want to know exactly how much time you've got left?
你想知道自己还剩下多少时间吗？
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Suppose that there were some sort of genetic marker and, although we didn't have a tattoo that you would just have to look at, -- but you could have genetic counseling-- have your DNA examined and you could tell, if you had the DNA testing, how much time you had left.
假设有某种基因标记，虽然我们没有,让你不得不去看的在身上的标记了，但你可能会去做基因咨询-,检查你的DNA，如果你做了DNA化验的话，你就能知道自己还剩多少时间。
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