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And some of them might be spinning clockwise, in which case, according to the right-hand rule we would consider them spin-down.
而另一些电子则是在顺时针自旋，在这种情况下，根据右手定理,我们会以为它是在向下转。
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The other chain is facing in the other direction, the 3' carbon is up, the 5' carbon is down.
对面的那条单链方向相反,3'位的碳原子向上,5'位的碳原子向下
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So what that means is that we're limited in any atom to having two electrons per orbital, right, because for any orbital we can either have a spin up electron, a spin down electron, or both.
这意味着在一个原子内,每个轨道上可以有两个电子，对吧，因为对任何轨道,我们可以有自旋向上或者自选向下或者两者都有。
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As soon as lanthanum takes that electron, this level rises ever so slightly, and then we jump down here and fill in the lanthanide.
一旦镧得到了电子，这一层就会稍稍上升，然后我们向下填一下镧系元素。
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If I now scroll down to the actual implementation, now does this work or not work?
如果现在我向下滚动到实际的执行中，这个是可用的还是不可用的呢？
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Dynamics then tells you why the object goes up, why the object goes down and why is it pulled down and so on.
而动力学则会告诉你为什么物体向上运动,为什么向下运动,为什么停下来,等等
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That was way fewer responses than I wanted. Let's try again; what's the name of this downward sloping line that I've just drawn?
没几个人回答啊,我再问一遍,这条向下倾斜的曲线叫什么
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And that may generalize again and it keeps going until you either get back to Adam and Eve, I guess. I don't think they were born in the US as far as I know, or you find somebody who satisfies that definition or you find that none of your parents actually are in that category.
降低到我的父亲或者母亲,是不是天生的美国公民呢,这个问题可以继续向下分解,你甚至可以追溯到亚当和夏娃的时候,据我所知它们并不是出生在美国的,或者你要么找到一个符合定义的人,要么发现你的父母都不满足条件。
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Press your lips together with the corners straight or down.
把嘴唇并在一起，嘴角成一条直线，向下。
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That's a strongly downward-sloping term structure.
这是个显著向下倾斜的期限结构
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Part of what we're doing in Princeton everyday is running to the next thing, to the next thing, to the next thing, always remind us on the next thing, and here you take a moment and realize the incredible richness of this moment.
我们每天在普林斯顿,都要奔向下一件事，下一件事，下一件事，总是被提醒着有下一件事，此时，花一些时间,体会到此刻,无可比拟的丰富。
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What we've done is taken this pitch and played it all the way down an octave below it so we're actually getting back to this configuration of the pitch right next to it, and we could--then of course we could go down one more step and we would get the octave, which is a duplication of two-to-one.
我们所做的是固定一个音高，向下一路弹奏一个八度,所以事实上我们又回到了与这个固定音高相邻的音上，我们当然也可以向下再弹一组，然后得到这个八度，这其实就是两个八度对一个八度的重复。
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And that the fact that it split into two was telling them that there must be some new property to the electron, and what we call that now is either being spin up or spin down.
它能一分为二的,事实告诉我们,电子一定有某种新的性质，我们叫它自旋向上或者自旋向下。
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They're colored different here to indicate one new difference that you know about now, and that's that there is an orientation, there's an up and down on the chain.
这里被涂成不同的颜色,来表示另一个不同之处,它是有方向的,表示双链一条向上,一条向下
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The reason it comes down is gravity is pulling it.
物体向下运动是因为重力作用
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The opposite leaflet does the other thing, the water soluble part points down and the fat points up, so now you have thin region of fat which is surrounded on both sides by water.
相反的部位则有不同的情况,水溶性部分向下,而脂肪向上,所以现在就得到了,两侧均被水包围的薄层脂肪区域
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And, in any arbitrary crucible full of molten silver, half of them are going to be spin-up and half of them are going to be spin-down.
并且，在任一个浇满了熔银的坩埚中，银原子中的电子一半是向上转,另一半是向下转。
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So this one is spin-up plus a half, this is spin-down minus a half.
所以自旋向上是正二分之一，而自旋向下是负二分之一。
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So let's actually scroll down to the interesting stuff here.
现在我们要向下滚动到这里，这才是我们要关心的问题。
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So one goes spin-up and the other goes spin-down.
所以一个是自旋向上，另一个是自旋向下。
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How long does it take me to find the k'th element? Linear. Because I've got to walk my way down it. OK? So in this case, you have linear access. Oh fudge knuckle.
线性的！因为我得从头,向下走一步步走,所以这里是线性访问，哦，有问题了吧。
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This is important because this molecule here, deoxyribose, is not the same upside down as it is - it's not symmetrical upside down and right side up, it's different because the 5' carbon's either pointed up or pointed down.
这很重要,因为对脱氧核糖来说,不都是像这样自上而下的,不是对称的自上向下或全部向上的,长链不同是由于,5'碳向上或者向下的指向不同
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Meaning, I'm just going to write a little loop that does that. All right, so let's go back to our code. That's right, let me pull this over a little bit, so I can see it. And what I'd like you to look at, I'm going to highlight it just for a second here, is those two pieces of code.
意思就是我只需,写一个小循环就可以了,让我们回到代码,让我们向下拉一点,我才看得见,我希望你看看这里。
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It makes sense to me logically that I want to see it first when I open the file; so I scroll on down but only later is increment declared.
这个逻辑上对我是有意义的，打开文件的时候,我想先看到它，所以我向下翻,之后才声明increment函数。
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As we go down a column, what happens is that the ionization energy decreases.
当我们沿着列向下走的时候，会发现电离能是在降低的。
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Then he knows it's going to go up, it's going to curve, follow some kind of parabola, then his hands go there to receive it.
所以他就知道,这颗糖会先向上,再向下,沿着某条抛物线运动,然后他就能判断在哪里接住糖
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You are pushing down with the weight mg, and the floor has got to be pushing up with the mg, because the spring is not going anywhere.
你向下的作用力是重力 mg,然后地面向上的支持力也是 mg,因为弹簧现在根本没动
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