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But he says the United States can't solve the world's problems alone and it is time for all U.N.
VOA: standard.2009.09.23
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But the nymphs in all of their sensuous beauty, with "flow'r-inwov'n tresses," they have to experience the same fate.
但是年轻女神很美丽，但头发被扯断了“,她们不得不经历同样的命运。
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All the energies are negative because it is a bound system. I start up here with n equals one.
所有能量级都是负数，因为它是一个束缚系统,在这里我从n等于1讲起。
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The Election Complaints Commission, a U.N.-funded watchdog, is ordering all ballots from suspect polling stations recounted and audited.
VOA: standard.2009.09.09
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So instead of being equal to negative z squared, now we're equal to negative z effective squared times r h all over n squared.
这里不再等于-z的平方，现在我们等于-有效的z的平方,乘以RH除以n的平方。
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But the U.N.-backed Election Complaints Commission is ordering a significant recount of ballots from every province covering 10 percent of all polling stations.
VOA: standard.2009.09.15
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.. I started out with the equally-weighted-- I was talking about stocks-- about n stocks that all have the same variance and are all independent of each other.
开始的时候我讲了等权重的-,我开始时讲了股票-,几支拥有相同方差的股票,彼此间相互独立。
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"We intend that working with all the other members of the U.N.Security Council,".
VOA: standard.2009.10.15
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k * n m plus k all times log n is in general going to be much better than k times n.
在普遍情况下要远远好于,实际情况要取决于n和k的取值。
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Last week in New York, Iranian Foreign Minister Manouchehr Mottaki invited diplomats from all 15 U.N.Security Council member countries, including the United States, to an unusual dinner meeting.
VOA: standard.2010.05.14
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So, in terms of finishing our Lewis structure, we're actually not done yet here, even though we have full octets, and we've used up all of our valence electrons, and the reason is because it's c n minus, so we need to make sure that that's reflected in our Lewis structure, so let's put it in brackets here, and put a minus 1.
那么，根据我们的路易斯结构的完成情况，我们实际上还没有全部完成，尽管我们有了填满的“八隅体“,而且用完了所有的价电子，原因就是因为这是一个负离子，我们需要确保我们的路易斯结构能反映出这一点，所以让我们给它加个括号，再加个负一。
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All U.N.personnel have now been barred from the entering the town.
VOA: standard.2009.08.27
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All right, I want to do one more at homonuclear example here, and this is n 2.
好的，我想要再讲一个同核的例子，这就是N2。
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Mr.Ban welcomed President Hamid Karzai's announcement Tuesday that he would accept a runoff with his closest rival, Abdullah Abdullah, after the U.N.-backed audit of the August 20 vote found nearly a quarter of all votes were fraudulent and had to be thrown out.
VOA: standard.2009.10.20
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And, in fact, it can't even reach n, because then we would have no potential energy at all in our electron, which is not correct.
事实上，它连n都达不到，因为如果那样的话,电子就没有势能了，这是不可能的。
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If you substitute it all in, you get basically order 2 to the n.
得到的是2的n次方个基本问题，指数级的，这是个问题，好。
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OK. And first of all, you say, wait a minute, x and n?
首先，你肯定会想，等等，x和n？首？
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And unlike n, l can start all the way down at 0, and it increases by integer value, so we go 1, 2, 3, and all the way up.
不像n，l可以从0开始取，然后每次增加一个整数，所以我们可以去1，2，3，一直下去。
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We can go all the way down -- magnesium aluminum, all the way to this noble gas, 3s23p6 argon, which would be n e and then 3 s 2, 3 p 6.
我们可以继续，镁，铝,一直到惰性气体，氩它是Ne然后。
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So, for example, if we're talking about the n equals 2 state, all of these four orbital descriptions are going to have the same energy.
例如，当我们说n等于2的态，所有这四个轨道的能量,都是相同的。
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So this is not even thinking about the other electron shielding, just if we think of the fact, all we need to think about is that the effect of going to a further away n n as we go down the table.
到现在我们甚至还没有考虑,其它电子的屏蔽效果，即使我们要考虑这个因素，我们需要考虑也就是,沿着周期表的某一列往下走，距离会逐渐变远,将起最重要的作用，actually，dominates,这一结果所产生的影响。
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So if we go to the ground state, what you see is we're at that lowest energy level, and we only have one possibility for an orbital, because when n equals 1, that's all we can do.
如果我们在基态上，你可以看到，我们在能量最低的态上，只有一种，可能的轨道，因为n等于1，只有这种可能。
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But there's something you'll note here also when I point out the case of the 2 s versus the 2 p, which is what I mentioned that I would be saying again and again, which is when we look at the hydrogen atom, the energy of all of the n equals 2 orbitals are exactly the same.
但是这里有一些事情你们也会注意到,当我指出2s和2p的情况，我之前提过,我会一次又一次的说，我们在观察氢原子的时候，2层轨道的所有n的能量,是完全相同的。
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So, if we just rearrange this equation, what we find is that z effective is equal to n squared times the ionization energy, IE all over the Rydberg constant and the square root of this.
我们可以发现有效的z等于n的平凡，乘以电离能除以里德堡常数,这些所有再开方，所以等于n乘以,除以RH整体的平方根。
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