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All right, so I'm burning some energy, I'm burning some fuel to do this somehow, to get that work to happen.
而这个路径需要先加热再冷却，这样，我需要能量来源，比如燃料，来完成做功。
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And it's pretty expensive to do so because I think they know you need to do it.
这样做很贵，因为我想他们知道你需要这么做。
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This is a sign of my economic status: I don't have to work. It is middle and lower-class women who do not get to observe purdah in this way.
但这恰好是我经济地位的标志：,我不需要工作，只有中下阶层的女人,才像这样不遵守深闺的习俗。
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I need to have a float. I need to have another float here, it's giving me some information.
这儿还需要一个,它给了我这样的信息。
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Some people ask me if I want you to know the molecular weights and so on, and I thought that was bit excessive.
有些人问我,你们是否需要记住元素的相对分子质量，我认为这样的话要求有点过高了。
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I don't always do that but I'd like to, ; and I can if you come at 11:30. Bring your books; I'm going to be talking about the texts and I hope you'll have them open.
当然我并不是经常这样，但我还是会尽力，你们需要在11点30分到，带上自己的书;,我会做一些关于课文的讲解,我希望由你们来开始讲。
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So that way you can have an idea if, oh, I do really understand this but I'm a little bit slow, maybe I need to practice this one type of problem a little bit longer so I can get up to speed so I'm going to be able to get through all this in terms of the exam time.
这样你就可以知道，假设，噢，我真的懂这个，但是我的速度有点慢，或许我需要在练习这个类型的题目上,多花一点时间,这样我就可以提高自己的速度,可以全部做完,在考试规定的时间内。
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Fifty-two of you so far, so what we need are more people to get clickers, because some of these polls will be interesting to do.
目前为止有五十二个人,我需要更多的人能有个表决器,因为这样的投票会很有意思
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Programmers often write TODO with no space, all caps like this which means "I have to do something here."
程序员通常写TODO不使用空格，像这样的大写意思是“这里我需要做些事情“
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Now to make that happen, it's not adiabatic, right. If I wanted to do that, I'd need a heating element or something to cool, so I could make that temperature change happen, right.
要实现这点，它就不会是绝热的，对吧，如果我想做到这点,我需要一个加热元件或什么制冷的东西,这样我才能让温度变化。
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I want a vector that I want to call the 0 vector.
我就需要这样的一个零矢量
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What it's designed to do is to give you the resources you think you need so that I can focus on measuring whether you'velearned anything as opposed to whether you've remembered, memorized anything, OK, and of course, something to calculate with.
这样做的目的是给与你们,认为需要的资源，这样我就能专心于,衡量你们是否已经学到了什么,而不是你们是否记得了什么，背下了什么，还有，当然，要计算一下。
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I'd like to give them a name, so I can refer to them in other places.
我需要给他们一个名字，这样我就能在其他一些地方引用这些值了。
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This says, I need a second argument to it, and that second argument better be a point so I can do the comparison.
这里我需要第二个参数，第二个参数最好是一个点,这样我就能做比较了。
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> David: At some point in time, I'm going to have to have declared the variable as a float before I can then hand it to printf as the insertion value for that format strength.
>，大卫：在一个特定的时间，我将需要,声明float类型这样的变量,那样我就可以把它打印出来,像是格式化优点的插入值。
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r+ And let's say that sodium has a radius, r plus, r- and chlorine has a radius, r minus, when r is very large in comparison to the radii of the ions, I don't need to draw them this way.
让我们假设钠有半径，是，氯也有半径，是，当r比离子半径大很多的时候，我不需要这样来描述。
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