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But for the most part, she says negative developments far outweigh the positive ones.
VOA: standard.2009.09.16
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So, when we get really close together, granted, there is a net positive negative charge with a Coulombic force of attraction.
当它们真正离得很近时，假设有一个带正负电的电荷,带有库仑引力。
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No, we call that work positive work. All right, so that means we need to put a negative sign right here, by convention.
历史上有过不同的习惯，这里我们规定,如果环境对系统做功。
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So do you think noble gases would have a high positive electron affinity, a low positive, or negative electron affinity?
那么，你认为稀有气体的电子亲和能,应该是一个高的正值，一个低的正值，还是一个负值？
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Or if you want negative numbers, between negative 2 billion and positive 2 billion, but it's a finite range.
或者你想储存一个负数，就必须位于负20亿到,正20亿之间，是个有限的范围。
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So, an energy deficit, accelerating charge, the accelerating negative charge, because it's the negatives that are orbiting the positive center.
能量的损失，加速电荷，加速的负电荷，因为这是负电荷,围绕在正电荷中心的周围。
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The difference is in positive reinforcement you do something; in negative reinforcement you take away something aversive.
区别就是，在正强化中你接受某种刺激;,而在负强化中你回避了某种厌恶刺激。
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There are two possible ways of reacting to this, one positive and one negative.
对此可以有两种应对方法，一个积极的一个消极的。
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It could be positive or negative or complex, but it's just an ordinary number.
它可以是正数,负数或者复数,但它仍然只是一个普通的数
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No positive number, no negative number. That's a zero.
没有正数，没有负数，只是个零。
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The two analogies we use " was strengthening our immune system or stronger "psychological engine" that has the capacity to endure more not just from the negative to zero, but also from the zero to the positive.
我们使用的两个类比,是加强我们的免役系统或加强“心理引擎“,获得更强大的忍受能力,不只是从负到零，还要从零到正。
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But when we're thinking about actual wave behavior of electrons, it's just important to keep in the back of our head that some areas have positive amplitude and some have negative.
电子的波动行为时,我们，要记住,某些地方是正的,某些地方是负的,当我们讲到。
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Above some temperature is going to be positive, below some temperature is going to be negative.
低于这一温度它是负数，我们一般忽略这些高阶项。
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And it turns out that when you constructively have two p orbitals interfere, and when I say constructively, I mean they're both either positive or they're both the negative lobes, that's when you got bonding.
当两个ｐ轨道,相长干涉时，我说的相干相长，意思就是说它们要么都是,正的叶瓣要么都是负的叶瓣，这时就能成键。
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So, this is a positive sphere of custard, and inside are little, negative bits.
这是一个带正电荷球状的乳蛋糕，里面有一些小的负电荷的小块。
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And so, there is an attractive force between the two of them, the positive and the negative.
因此这两个正负电荷间，存在一个吸引力。
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And when we're talking about the amplitude of the wave, we're talking about the deviation from that average level. So, if we define the average level as zero, you can have either a positive amplitude or a negative amplitude.
当我们讨论一个波的振幅时,我们说的是偏离平均位置的量,如果我们把平均位置,定义为零的话，那幅值不是,正的就是负的，有时候人们在。
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The molecule is net neutral, but this right end is a little bit more negative and the left end is a little bit more positive.
这分子是电中性的，但右边要带一点负电荷,而左边要带一点正电荷。
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So zero is supposed to be neither positive nor negative, and here I am just simplifying and saying it's actually going to be negative.
所以0不是一个正数，也不是负数，在这里我只是简单地,说明它实际上会是负数。
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Coulomb's law says the negative will be attracted to the positive, and the atom will collapse.
库仑定律说,负电荷会被吸引到正电荷上来，原子会坍塌。
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The total negative charge of the electrons is equal to the positive charge of the nucleus.
所有电子的负电荷,等于核的正电荷。
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So we would say we have a positive phase here and a negative phase there.
我们可以说我们在这,有正相位而这有负相位。
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And there is this separation which is a balance of attractive forces because the chloride is net negative and the sodium is net positive, but both of them, regardless of net charge, have electrons.
这里有一个平衡,引力的平衡,由于氯离子带有负的净电荷,钠离子带有正的净电荷，但是它们两个，没有考虑净电荷，电子。
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And shielding is a little bit of a misnomer because it's not actually that's the electron's blocking the charge from another electron, it's more like you're canceling out a positive attractive force with a negative repulsive force.
屏蔽有一点点用词不当,因为它事实上不是,电子阻挡了来自另一个电子的电荷,它更像你在用一个负排斥力，抵消一个正吸引力,但是屏蔽是考虑这个问题,的很好的方式。
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You've got a positive charge here with a negative charge around it.
正电荷在这儿,负电荷在周围。
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And what you find out if you do these calculations, is that you have a negative 1 for your formal charge on nitrogen, you have a negative 2 for your formal charge on carbon, and you have a positive 2 for your formal charge on sulfur.
而如果你做了这些计算会发现，氮的形式电荷量为负一，碳的形式电荷量为负二，而硫的形式电荷量为正二。
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So, what this means is that when we're looking at an actual wave function, we're treating it as a wave, right, so waves can have both magnitude, but they can also have a direction, so they can be either positive or negative.
这意味着,当我们看一个波函数时,我们把它看做一个波，波不仅有幅值，还有方向，所以它们可正可负，如果。
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putting all those things together, if you looked at this question again we'd get 100% on it, 0 9 that our only option here is 0. 9, and that it's not the negative, it's the positive version, because we're talking about how much energy we have to put into the system in order to eject an electron.
把这些放在一起，你们再看一下题目,大家100%都能选对，我们唯一的选择就是这个，它不是负数，它是正的，因为我们说的，是要,把电子激发出来,需要提供的能量。
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And for some people the balance is positive, " for some people perhaps the balance is negative, " whether for their life as a whole " or for certain stretches of their lives."
对某些人，结果是正数，“对某些人结果是负数，“不管是他们的一生,“或者他们生命的一段时间“
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I mean, if you do the--If you look at the results for the study, it turns out that there is an association as bias to view white Americans as positive and African Americans as negative but it shows up in half a second difference.
如果你看这些研究的结果，你会发现人们有一种偏见,把白人和积极的意义联系在一起,把黑人与消极的意义联系在一起,你只有看这半秒的差别，才能发现这种偏见。
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