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Now remember that only appears in DNA and appears in RNA, and so can also form a hydrogen binding pair with .
还要记住T只出现在DNA中,而U出现在RNA中,U和A也可以通过氢键结合就可以了
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So we would pair off students with Hispanic families in need,
我们会将他们与有需要帮助的拉美裔家庭结对，
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For the carbon, we start with 4 valence electrons, we have 0 lone pair electrons minus 4, and we end up with a formal charge of 0.
对于碳，我们从四个价电子开始，我们有零个孤对电子，再减去四，最终我们有零个形式电荷。
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I will randomly pair your form with another form and neither you nor your pair will ever know with whom you were paired.
我会随机把你们分成两两一组,你们不知道会跟谁分到一组
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If an impure object--and you will see here these overlapping pairs, if you can imagine the lower pair sort of being plunked down on top of this pair, that will give you an idea of what we're trying to convey with this image.
如果一个不纯洁的东西--看这里，这些重叠的单词，假设这两个单词,突然跑到这两个的上面，这样你就会对我们这个图示想传达的内容有个概念。
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You can't compare a pair of shoes with the child's life."
你不能拿一双鞋子和一个小孩的生命比较“
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Actually, the view of vectors we take nowadays is that vectors are associated with a pair of numbers which, on the rotation of axes, transform like this.
实际上,今天我们讲矢量所用的观点是,矢量是和一组坐标值相对应的,在坐标轴旋转的过程中像这样变换
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It has to do with the nature of this complementary binding between double stranded DNA and the fidelity of this base pair matching in forming stable DNA molecules.
这些特性能从根本上解释,为何DNA双链的碱基能互补配对,以及在形成稳定的DNA分子结构时,碱基互补配对为何具有一致性
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We have to pair that with that other evocation of the landscape to see this alternate idea, that actually this distanced criss-crossing of the landscape could be damaging. Think of those other violent knight's moves, like skipping past the mother's death.
我们得把关于风景的另一个回忆组成一对去理解,这个额外的想法，这个疏远的,十字纵横的景色描写可能是毁坏性的，想想其他的暴力的,迂回前进，比如跳过母亲死亡的方式。
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What you used to do is, every six months you'd pull out your bonds and you'd clip the coupons with a pair of scissors; you take them to a bank and they would give you cash for your coupons.
过去,你每六个月从你的债券上,用剪刀剪下息票,把它拿到银行,用息票兑换现金
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If it isn't, then I'm going to go back around the loop, and notice what happens. If I get all the way around the loop, that is, all the way through that FOR loop and I never find a path that takes me through here, then the last thing I'm going to do is return a pair or a tuple with a special simple number none twice.
如果没有,我会回到循环看看发生了什么,如果我运行了整个循环,也就是整个for循环,我仍没有找到符合条件的路径,那么我最后做的事情就是返回一对,或者一个数组的两次none值。
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So in terms of nitrogen that starts off with a valence number of 5, again we have 2 lone pair electrons in the nitrogen, and again, we have 6 electrons that are shared.
对于氮来说,我们应该从五个价电子开始，同样，氮也有两个孤对电子，共用电子的个数也一样，是六个。
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For the sulfur, we start off with 6 valence electrons, minus 4 lone pair electrons, minus 2, taking in account our bonding electrons, so we end up with a formal charge of 0.
对于硫，我们从六个价电子开始，减去四个孤对电子，再减去二，算上我们的成键电子，因此最终我们有零个形式电荷。
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The story of the first human pair in the Garden of Eden, which is in Genesis 2 and 3 has clear affinities with the Epic of Gilgamesh, that's a Babylonian and Assyrian epic in which a hero embarks on this exhausting search for immortality.
创世纪2至3，里，伊甸园亚当和夏娃的故事,与《吉尔迦美什史诗》有着密切的联系，《吉尔迦美什史诗》是巴比伦人和亚叙人的,一个英雄竭尽全力追求永生的故事。
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But days three and six each have an extra element, And the fact that the first elements here pair up nicely with each other suggests that the extra element on day three and the extra element on day six might also be paired in some important way.
但是第三天和第六天都有一个附加的因素，首要的因素就是这些事物都完美地匹配,这表明，第三天的附加因素,也应该与第六天的附加因素在重要的方面相匹配。
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All right, so here once again is our same matrix with me and my pair, choosing actions Alpha and Beta, but this time I'm going to put numbers in here.
我们首先讨论我和我对手,选择α或β的矩阵,不过这次我们用数字来表述
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At every instant, it's got a location given by the vector R; R itself is contained in a pair of numbers, x and y, and they vary with time.
在每一个瞬时,它的位置由位矢 R 给出,R 本身包含了一对坐标值 x 和 y,并且它们都随着时间的变化而变化
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Mrs. Watts was sitting alone in a white iron bed cutting her toenails with a large pair of scissors.
Watts太太独自坐在,一张白色的铁床上,用一把很大的剪刀,剪自己的脚趾甲。
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So what I'm going to do is I'm going to put me here, and my pair, the person I'm randomly paired with here, and Alpha and Beta, which are the choices I'm going to make here and on the columns Alpha and Beta, the choices my pair is making.
那么我把我写在这里,我对手,就是被随机分到的人写在这,还有是α和β,就是我要做的选择,还有我对手要做的选择
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Well they won't be, If you put Alpha and you're paired with Beta, then you will get an A and your pair a C.
纯属娱乐,大家别当真,如果你选α而你对手选β,那么你得A你对手得C
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So if we still have an angle of a 109 . 5 degrees, and again, we still have four unpaired electrons available for bonding, we can make one of those bonds with another s p 3 hybridized carbon, so we're going to make up one pair here.
如果键角仍然是109。,同样，我们还有4个未配对的电子可以用来成键，我们可以用其中的一个,和另外一个sp3杂化碳原子成键，这样我们可以组成一对。
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But because there's this lone pair here, it's pushing down on the other bonds, 5° so we end up with an angle of less than 109 . 5 degrees.
但因为这里有孤对，它会把其它键向下压，所以键角会小于109。
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And we give different names, depending on what kind of electrons we're dealing with, so, for example, with h c l here, we can talk about having bonded versus lone pair electrons.
我们还起了不同的名字，给我们要处理的不同类型的电子，以氯化氢为例，我们来介绍一下成键电子与孤对电子。
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So, using our simple valence bond theory, what we would expect is that we want to pair up any unpaired electrons in methane with unpaired electrons from hydrogen and form bonds.
利用简单的价电子成键理论，我们预计,要把所有甲烷中没有配对的电子,和氢原子中没有配对的电子配对来形成键。
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If you put Beta and you're paired with Alpha, you'll get a C and your pair an A.
如果你选β你对手选α,你得C你对手得A
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Conversely, if I chose a Beta and my pair chooses an Alpha, so I end up with a C and she ends up with an A, then you know I have a bad time explaining to my parents why I got a C in this class, and I have to say about how I'm going to be president anyway.
相反如果我选β我对手选α,我得到C她得到了A,我回家后很难跟父母,解释为什么我只得到了C,然后我还得表示下雄心壮志
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