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And the boy uses the trees to do two things, right: to go up, or go out, and come back, to return.
这个孩子用树做了两件事：,上去，出去，回来，落下。
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And we do two to three concerts per year. We have two rehearsals a week.
我们每年举行二到三次音乐会。每周练习两次。
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So, in order to fill our octet, what we do is put two on the nitrogen and two on the carbon.
因此，为了填满我们的“八隅体“,我们需要将两个放到氮上，将另外两个放到碳上。
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And so what I'm going to do is just now run through the next two or three scenes and talk about why they're set next to each other.
因而我现在只是讲一下,接下来的两三个场景,并谈谈他们被放在一起的原因。
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OK. I get the two values in, what do I need to do, well, you sort of know that, right?
好，有了这两个输入值了，我接下来将要做的，你知道对不对？
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So, that's what a lot of people do; in fact, about two thirds of the folks do that.
所以,大部分人都是这么干的,其实有三分之二的人这么干
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Two of them. -Between the two of them, which one do you prefer, which one do you think is Welles's better work?
是的，-在这两者之中，您更喜欢哪个，您觉得哪个是威尔斯更好的作品呢？
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What I'm going to do is I want to draw the two functions we just found and see what they look like.
下面我们绘制两个函数图像,看看图像是什么样的
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Now, which of these two people ? do you find more attractive in listening to the tape?
那么，这两种人,听过录音之后，你觉得那种更有吸引力呢？
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So what this means, if you used to have two children and now you have four, how do you provide for the extra two?
比如一家过去有两个孩子,现在多了两个,多了两张嘴,怎么办呢
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1 2 3 Let's now do negative one, two, three.
让我们先在试。
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I feel like I have to introduce concepts like variance and co-variance and correlation in order to talk about finance; so that's what we'll do in Lecture Two.
我会讲到像方差,协方差,相关系数,这样的概念,为金融学的内容作一些铺垫,我们会在第二课讲到
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So come to two lectures, one section, and do the work regularly.
下面要完成两个课时,一个课外讨论,按时完成作业
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What are the other two going to do?
那另外两根呢？
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Why do you stop me? For two reasons.
为什么要让我停下来呢,两个原因
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Now we really do have two ropes.
现在真的有2根绳子。
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