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How do we know that they are not going to keep it all?" The United States and allies France and Russia have supported the IAEA draft deal with Iran as a means to alleviate concerns that Tehran is using its nuclear program to develop atomic weapons covertly.
VOA: standard.2009.10.28
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And yeah, I know you know how to do it, but let's think about what might happen if I wanted to do that.
对，我知道你们知道该怎么做，那么让我们看看如果我,想要完成的话会发生什么。
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If you know how to do it, you can get it for really cheap.
要是你知道怎么做的话，你就可以买到很便宜的票。
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I don't know how to do it really.
我不知道要多快才行。
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And so this doesn't know how to do it, it doesn't have a method to deal with it, so it complains.
因为，我原来是期望做什么来着？,我原来是要对x坐标，和y坐标进行对比的。
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Unless you tell them what to do they're not gonna know how to do it.
除非你告诉它要做什么,它自己是不知道做什么的。
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I don't know how to turn it on, I don't know what to do.
我不知道怎样打开，不知道要做什么。
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How do you know, not only that it didn't happen to you last night?
你怎么知道，只是昨晚没有发生？
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And once you know how it sounds, making those sounds for yourself would be a lot easier to do.
一旦你知道该怎么发音，你就能更加容易地把它说出来。
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or know how to do the homework, it's just more important having you there,
或者怎么做作业，有家长陪伴在旁边更重要，
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I can change everything overnight; it does happen. I put that in for a reason because sometimes some of you have not taken a physics course and you don't know how to do well in physics and slowly you catch on and by the time it's Final exam you crack the code; you know how to do well.
我能一夜之间扭转乾坤,确实有过这样的例子,我这样做是因为,有时你们中有人可能以前没上过物理课,不知道怎样学好物理,但慢慢地你赶了上来,到期末考试的时候,你忽然灵光一闪,考起试来得心应手
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And the problem is, that we want to build this abstract data type, but we'd like to basically know what kind of object is it, and what functions actually belong to it, how do we use them?
然后我对它们运行了这个方法，就是这一小段代码这个方法,这有意义么？,当然没有了，对不对？,因为你知道，当你把两个极坐标，表示的点进行相加运算的时候？
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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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So it's a short problem set, but make sure you know how to do those problems.
因此这是个小问题集,但是确保你懂怎么解决这些问题。
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We don't know how long it takes to do x 2.
我们不知道要多长时间。
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If unfamiliar, these are the mechanical computer devices that you have to use to buy a ticket on the T these days and there was one of these really awkward but touching situations where it was clear that this woman had no idea, you know, what to do, how to get from here to here, and I could see her just staring at the turnstiles that you're supposed to go through to get into the subway.
如果不熟悉，这是机械计算机设备,当今你必须使用它们来买地铁票,它们实在是难操作的,这个令人同情的情况是,明显这位老太太不知道怎样操作，怎样从这一步到那一步,我看见她只是凝视着,地铁的栅门口。
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You do need to know how to use it, but it's not about the details of, where do the semi-colons go in Python. All right?
你们确实需要知道怎么使用它，但是并不是具体细节，比如在Python中怎么写分号，好么？
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Since what we want to know is whether the soul is immortal, how do we know it can't break.
既然我们想知道,灵魂是否不朽，我们怎么知道它会不会破裂呢。
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You'd pull out your pencil and paper, you can do it as a matrix inversion if you know how to do that, or you can just simply do substitution of one equation into another to solve it.
你知道你在小学的时候是怎么做的对吧？,你拿出你的笔和纸,如果你会的话,你可以解一个方程组,或者你可以单纯地。
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so we know how to do this, and we know this thing when it hit these stops, v2 the pressure with p2, and the volume was V2.
所以我们知道怎么计算，当活塞到达这两个挡板时，压强是p2，体积是。
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Oh, but how do I know how long it takes to do x 2?
但是，我想知道用第二种方法,做要多长时间呢？
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