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Analyst Houchang Hassan-yari, who teaches at Canada's Royal Military College, says that the recent reactions of Iranian leaders demonstrate a growing realization on their part that sanctions are starting to have a negative impact on their economy.
VOA: standard.2010.07.23
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- So most of you recognize, if we switch back to the notes, that they do have a negative electron affinity.
看来大部人都想到了，如果你翻翻讲义的话，它们的电子亲和能确实是负的。
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So if we have a negative change in energy for any reaction as it's written, what that actually means is we're giving off energy as the reaction proceeds.
如果我们像这里写的这样,在任何一个反应过后，得，到的能量变化为负值,这就意味着我们在这个过程中放出了能量。
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Polls show that Democrats and a sizable number of independents have a generally negative view of Palin.
VOA: standard.2010.02.09
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For example, do you think that ? mortgage will have a negative impression?
举个例子，你认为,抵押贷款将会产生消极影响么？
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"And if they continued to lionize him in a public fashion, that these kinds of public demonstrations can only have a profoundly negative effect on our relationship."
VOA: standard.2009.08.24
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The Trans fats that we mentioned before that you can see listed over here from margarine, shortenings, deep fried foods, a lot of fast foods and baked goods have a negative impact on health as well.
之前提过的反式脂肪,你可以在人造黄油,起酥油,油炸食品以及很多快餐和烘烤食品中找到,它对身体也很不好
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"When you have a situation like this occur, you are bound to have a situation down the line where there could be a shortage in food, which can also trigger other negative situations, such as malnutrition, for example, or insufficient food for cattle, which is also another important economic sector in West Africa,".
VOA: standard.2009.09.08
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Now you have this situation where you have a droplet that is net negative or perhaps net positive.
现在的情况是那些液滴,可能是净负电，也可能是净正电。
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So two possible negative effects--the taste is just a tease, the how the noble have fallen--on the one hand.
所以两种可能的负面影响，品尝只是一种戏弄，贵族如何没落，在一方面讲。
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We have to bring the best people in, edit the best people in so we have a good cast of characters, and edit away any negative elements.
我们必须招揽最优秀的人，吸纳最优秀的人,所以我们有了强大的阵容，剪辑走了负面元素。
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It's not even a zero-- or rather if I have less, you'll have less- that's a negative sum game-- or a zero sum game-- if I have more, you'll have less- it's a fixed pie.
甚至不是一个零…,或者我更少，你也会更少，那也是负和游戏-,或零和游戏，我更多，你就会更少-,饼就那么大。
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It says, if you pull it to the right, so that x is positive, the spring will exert a force which is in the negative direction; that's why you have a minus sign.
就是说,如果你向右拉,x 取正值,弹簧产生的力方向为负,这就是这里用负号的原因
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So, for example, if we were looking at the actual wave function, we would say that these parts here have a positive amplitude, and in here we have a negative amplitude.
我们看，一个波函数,我们说，它这部分幅值，为正,这部分幅值为负，当我们看。
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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 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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So, if we think about the second case here where we have c n minus, now we're talking about a molecule with a net charge of negative 1.
那么，如果我们考虑的是第二个例子,也就是氰离子，那么现在我们讨论的是一个净电荷量为负一的分子。
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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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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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We have the minus because we're adding a negative charge from the electron.
有这个负号的原因是,我们得到一个电子后增加了一个单位负电荷。
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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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So, if you have any negative numbers you'd have a problem, right?
所以如果中间有负数就会有问题
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But if life would no longer have anything good to offer you, if what you then would have had would have been something negative instead of something positive, then at that point, dying wouldn't actually be a bad thing.
但是当生命再也不能向你提供美好，届时我们面对的是,消极的而非积极的东西，那时死亡可能不是一件坏事。
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Let's re-draw this, so it looks a little bit neater, where we have a triple bond in the middle instead, and again, we need our negative 1 charge there.
让我们重写这个，这样看起来更整洁一点，我们有一个三键在中间，同样地，我们这里需要一个负电荷。
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So for example, that might have a formal charge of negative 1, because to some extent it has gained that much electron density that it now has a formal charge that's negative.
比如，可能它的形式电荷为负一，因为在一定程度上它得到了这么多的共用电子密度,那么它现在就有了负的形式电荷。
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Remember when we have waves we can have positive or a negative amplitude.
记住一个波会有,正的幅值和负的幅值。
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Neither it is a negative sum game-- it's not that my happiness takes away from other people's happiness which will be a negative sum game: if I have more, you'll necessarily have less.
也不是负和游戏-,我的快乐不是从别人那里夺来,那将是负和游戏：,我有更多，你一定更少。
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Often a good thing to start with is to put the lowest ionization energy atom in the middle, and if you don't have charge separation then go with that structure, but if you do find you have a lot of separation, such as the case in negative 2, positive 2, and minus 1, then you want to say wait a second, this is really bad in terms of formal charge, let me go ahead and see what other options I have here.
通常一开始把电离能最低的原子,放在中心位置就很好了，如果你发现电荷没有分开,那么这个结构就没问题了，但是如果你发现有很多分开的电荷，比如这种情况，有负二，正二和负一，那么你会想要说等一下，从形式电荷来看这很不好，让我去看看其它可能的选择。
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But since it is a component it can have a direction, too, so can go up l between negative l and positive l.
但因为它是个分量,它是有方向的，所以它可以,从负的l一直到正的。
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And we haven't talked about reactions at all yet, so you don't need to worry about the specifics of that exactly, but just that if you have this negative change in energy, you have a more stable product than you do reactant.
当然我们还没有开始讨论反应，所以你不用担心它的细节是怎么样的，你只需要知道，如果能量的变化是负值，那么你将得到一个比反应物更稳定的生成物。
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