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"If you want to bring about change in the world, you can't just be an advocate of somebody else doing it,"
VOA: standard.2009.09.23
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If you were to make that change you would find that the molecule now has completely different biological and chemical properties.
如果要做出这样的变化,你会发现,分子的生物形状,和化学性质完全改变了。
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This completely could change if you were to flip from one to the other conformation which can happen in chemical reactions.
在化学反应中,它们的形状,可以从一种折叠成另外一种。
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And if you could change the gene and make people not gay in the womb should have been done.
如果人们能够改变这种基因,让同性恋们在母体内就改变性取向,那么这种认定就应该进行。
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If you double everything in the system, the temperature is not going to change, it's not going to double.
如果你把系统中所有的东西增加一倍，温度是不会变的，它不会跟着增加一倍。
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Because if you think about it, suicide doesn't change the fundamental nature of the human condition, life followed by death.
因为如果你考虑一下，自杀没有改变人类处境的基本本质，生后即是死。
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Because I could've built that in, it says if you change the value of this thing, by the way you need to change recompute those other values in order to make this hold up.
我想要大家通过定义好的方法，来改变实例的值了,因为我可以把这个功能，内置到方法里面去,它的意思就是如果,你改变一个值。
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If you want to spread happiness, "Be the change you want to see in the world." By example.
如果你想传播快乐，“成为你想在世上见到的改变“，以身作则。
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And, if you'd like to change, you can do so only with the permission of the administrator.
如果你们想要更改时间，只能在课程管理主任允许的情况下,这样做。
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But if you are so inclined whether for this problem set or any other throughout the term, you can change your mind week to week.
但是如果你倾向哪套题,那么你可以按周改变想法。
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For example, if it's more convenient should you change the environment to make the unhealthy food less convenient and make healthy foods more convenient?
举例来说,如果是因为方便,那你改变外部环境,会使得健康食品比垃圾食品更容易获得吗
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It would depend if you view the change as a negative thing.
这取决于，你是否觉得这种改变是不好的。
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So you start with your basic model, then you add in, you enrich the model, and you see if the results change, and that'll help you explain why you're getting different results in different settings.
你们从最原始的模型开始,加入约束条件来丰富这个模型,然后检验结果是否有变,这能帮助我们解释,为什么在不同条件下结果是不同的
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There are so many ways in which that has changed the world, but I can't do justice to it but Hanson does, so if you want to read, fields Without Dreams, you can ponder the significance of this great change.
有太多改变这个世界的因素了,我很难全部都客观地讲出来,但是汉森可以,你可以在《遗梦之野》中有所了解,你可以仔细琢磨这些伟大的变革
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I'm using the fact that when you take a cosine and change the angle inside the cosine, it doesn't care. whereas, if you go to the sine and change the angle inside the sine, it becomes minus sine.
我用了一个结论,当你使用余弦函数时,改变角度的正负,函数值不变,而对于正弦函数,改变角度的符号,则函数值也会变号
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If this theory you might say of sort of cataclysmic change is true we cannot rule out the possibility that a constitution like ours or even identical to ours existed at some point in the ancient past in the far distant past that Aristotle knew about.
你们可能认为，如果这个理论,即剧烈变革的理论为真,我们就不能排除,像美国宪法,或相同于美国之其它现存宪法,早在远古。
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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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And when we talk about intensity in terms of units, we usually talk about watts, so if you change your lightbulb, usually you see the intensity in terms of watts.
当我们讨论强度的单位时，我们经常用瓦特，所以如果你更换灯泡，你通常会看到,以瓦特为单位的强度值。
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How many moles of gas are there in each case, in reactants and products? If that changes, of course you know that the pressure in there is going to change at constant volume if the amount of gas in there is changing.
在反应物和生成物中，各有多少摩尔的气体？,如果它发生了变化,当然在等体条件下，如果气体的总量,发生了变化，压强也会发生变化。
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We can say, we'd better say that you can have the very same personality even if some of the elements in your personality change.
我们可以认为，最好认为,即使你人格中的某些部分改变了,你拥有的还是同一个人格。
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If you change the composition, you change the properties. But this is different.
如果你改变组成成分，你就能改变属性，但是这是不同的。
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It's just asking you if you wanna change the name.
也就是问你，要不要改文件名。
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If you change the temperature entropy changes and so on.
如果你改变温度，熵也会变化。
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I've simply added this one extra constraint, nice thing about thinking about it this way is it's easy to think about it, and what do you think I'll have to do if I want to go change the code?
我已经加上这个额外的约束条件，思考这种方法有件好事,那就是以这种方式来思考很简答,你认为我要是想？
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So that should mean that the energy that's transferred to the electron should be greater, but that's not what you saw at all, and what you saw is that if you kept the frequency constant there was absolutely no change in the kinetic energy of the electrons, no matter how high up you had the intensity of the light go.
所以这意味着转移到电子,上的能量也越大，但这并不是，我们观测到的现象,我们所看到的是,如果固定光的频率不变,不管光强如何变化,电子的动能没有任何变化。
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If you change the animal's environment and you give it access to these sort of foods, and these are the pictures that I showed in the first class, and you remember I asked you what constituents of this diet promoted obesity and you said it was fat, sugar, and variety that was correct.
如果你改变动物所在环境,再给它们这些食物,这些图片我们在第一课见到过,我问过这些食物中哪些成分使人发胖,你们说脂肪,糖和其他成分,没错
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It's also very interesting to think about how the food label could change because this legislation comes up here and there and government consideration, and so if you guys have thoughts that you'd like to write about on one of your concept sheets about what could done to the food label to make it more effective, and more accessible to people, then feel free to write about that. Yes?
考虑一下食品标签可以如何改进,也是很有意思的,因为立法和政府考虑无处不在,如果大家有任何想法的话,可以在你们的观点报告里写一篇文章,关于如何改进食品标签,使其更有效,并且更通俗易懂,大家可以自由发挥,请讲
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If you wish to change sections, you may do so only with permission of the subject administrators because it's very important that those sections be kept at a small population.
如果你们想要改时间，你只能在课程管理主任允许,的情况下这样做,因为让课程的人数保持在比较少的水平,是很重要的。
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And so you know that if only you were to read these things in the envelope, you would change your mind and no longer want to go out with her.
所以你知道,只要你看了信封里的内容，你会改变主意,不再想和她约会。
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If you do, the unit vectors are called i prime and j prime, the components of the vector change.
如果这么做,单位矢量就是 i' 和 j',矢量的两个分量也会发生变化
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