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A test suite that will make us feel good about things. For now, I just want you to be aware that you're always doing this balancing act.
测试集呢？一个测试集会让我们的工作,变的舒服多了，现在，我只是想让,大家意识到你们经常需要做这种协调工作。
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I think there are a lot of steps that we can and should take towards mitigating it,
我认为我们有许多方法来减缓气候变暖，而且我们也必须这么做。
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We deliberate with an eye to preservation or change to making something better or to preserve it from becoming worse.
我们商议,以求保守或改变,让事物变好,或保守它不至于变得更坏。
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Now we know we're going to get less work out of it in that case.
我们知道,这样的话得到的功会变少。
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And I have purposely made the arrow shorter to indicate that it has been slowed because we are going to argue its mass didn't change, so the only way to change its energy is to change its velocity.
我已经故意将这个箭头弄短,用来象征它变慢了,因为我们将证明它的质量没有变，只有它的能量改变了,也就是它的速度变了。
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It imports it into our database and does some fancy indexing as we'll call it later in the term to make searches more efficient.
将它导入到我们的数据库中，并进行一些变址,这将在后期会提到,它可以使查找更高效。
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This is because even though z, the atomic number is still increasing, we are also getting further away from the nucleus.
从有效核电量方面来想一想为什么，这是因为，尽管，Z，原子序数依然在变大，但我们同时也在离原子核越来越远。
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It could still be the case that we die before life has turned bad.
有可能我们在生活变糟糕之前便死了。
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We want to do that in the simplest context, then we can make the example more and more complicated, but the phenomenon will be the same.
我们想举一个最简单的情景,随后我们可以再看一下更复杂的情况,但是万变不离其宗
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You develop a particular delusion, like it's getting dark .
我们想象一个特殊的错觉,就像是这里正在变黑
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you tell me you believe American people should understand about each, We talked about stimulus, and you argues that it is not simulative at all, the cap and trade global warming bill passed the house in late June and now move to the Senate.
您说过,您认为美国人,应该彼此理解，我们讨论了刺激计划，您说刺激没有效果，全球变暖总量控制与交易法案,今年六月刚在众议院通过,现正在参议院审议中。
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and we've been really busy this week preparing for our Super Bowl commercials.
我们也会因为准备超级大赛的商业宣传而变的非常忙。
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I think that global warming is an extremely important issue for our time.
我觉得全球变暖是我们时代一个极其重要的问题。
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PROFESSOR: No. The goal does not change, it's still the same goal. What changes?
教授：不，我们的目标没有变，那变化的是什么呢？
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We establish these targets, we review them once a year, we don't make changes in many years, they're quite stable, and when we do move them we don't move them by a lot.
我们设定了这些资产配置,每年都会评估一次,这些指标已经很多年没有变过了,十分稳定,即使我们要调整,也不会有很大幅度
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Our hypothesis is that in the United States it's less expensive to sweeten things than it is elsewhere in the world, and part of that is because of high fructose corn syrup that we'll talk about later in the class.
我们假设,在美国,让食物变甜的成本比在其他国家要低,其中一部分是因为高果糖玉米糖浆,稍后我们会讲一下这个糖浆问题
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But we need to become more concerned about global warming, pollution,
我们需要更多关注全球变暖、污染问题，
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Now the modulation--change of key from major to back to minor as the cortege will start up again and then we-- A nice clarinet sound there and here comes our cortege with the bass.
现在变调了,从大调,变回小调,送葬行列再次启动,然后我们听到了优美的单簧管,送葬行列伴随着低音来了
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especially if we are actually going to combat the problem,
尤其是如果我们真的要应对全球气候变暖这个问题，
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towards stopping it or at least slowing it down.
我们可以停止这种趋势，或者至少减缓变暖。
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We're going to drop the pressure, the volume is going to go up.
我们会降低压强，体积就会变大。
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So if we compare l increasing here, so a 3 s to a 3 p to a 3 d, what we find is that it's only in the s orbital that we have a significant probability of actually getting very close to the nucleus.
我们比较当ｌ变大的时候，从３ｓ到３ｐ到３ｄ,我们可以发现只有ｓ轨道,有很大的概率,非常接近原子核。
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So delta u is just equal to the work but we also know what happens T2 because the temperature is changing from T1 to T2.
所以Δu等于输出的功,但我们也知道它会发生,同时我们知道温度从T1变到。
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So, there are 2 different things that we can compare when we're comparing graphs of radial probability distribution, and the first thing we can do is think about well, how does the radius change, or the most probable radius change when we're increasing n, when we're increasing the principle quantum number here?
当比较这些径向概率分布图,的时候，我们可以比较两个东西，第一个就是考虑当我们增加ｎ,当我们增加主量子数的时候，半径怎么变，最可能半径怎么变化？
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So now let's try looking at something V2 where are V1 goes to V2.
现在我们考察一个过程,这个过程中系统的体积从V1变到。
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We know that ionization energy is going to increase as we go across the periodic table, so that means carbon has a lower ionization energy than nitrogen which is right next to us.
我们知道电离能会随着周期表,向右而逐渐变大，因此碳的电离能比旁边的氮要低一些,那么就像我说的。
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Think of anything else with the density goes down when it freezes, and think about where we would be if that wasn't the case.
想想有没有其他的物质,在降温时密度会变大，再想想如果不是这种情况,我们将会怎么样。
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Then you put two pistons, one on that side here and one on this side here, and the external pressure here, we're going to call that p1.
接下来我们放进两个活塞,一个在这，一个在这,这变外界的压强为p1；
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So we can compare the two electron configurations, and we can actually think about what we figure out from them, we see that two are lowered in energy, two electrons are raised in energy, so we have no net gain or no net loss in energy for h e 2.
我们可以比较两种电子构型，我们可以考虑,我们发现这，两个电子能量变低，两个电子能量升高，所以在He2里没有净的能量得失。
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