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Let's say you have to go through three or four operations to get a final number, well, do it algebraically.
让我们说,你不得不通过3-4个操作,才能得到最终的数，好吧，用代数方法求解。
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Well, I'm going to get back, let's just draw a bigger square than usual that's roughly four times the size.
嗯，返回的是，我画一个更大的方形,大致上是4倍的大小。
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So let's picture what this looks like here, and we'll start with four and we'll add in our last two.
让我们想象一下它的样子，我们先给出四个，然后加上另外两个。
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Let's see what happens here, just the motif, one, two, three, four, three four, one two, and then the theme.
让我们看看到底发生了什么,正是动机,一,二,三,四,一遍又一遍,然后是主题
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Let's say you have four questions, you have 50 minutes, take out five minutes to read the paper, so that's 45 minutes.
你有四个问题，你有50分钟，花5分钟阅读考试，剩下45分钟。
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Let's say there was four times as much Venture Capital, would we have four times as much innovation? I don't think so.
比如说，投入资金达到了风险资本的四倍，就会有四倍的创新思维吗？，并不是这样。
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Well, Fahrenheit came along and thought, well, you know, 7-1/2, that's kind of silly; 22-1/2 that's, kind of silly So let's multiply everything by four.
然后华伦海特来了，他想，7。5，听起来有些犯傻;,22。5，那也够傻的,我们还是把所有的东西乘以四吧。
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So let me tell you about-- I have slots now for four outside speakers.
我来介绍一下...,我将安排四位客座嘉宾
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Let's talk about physical attractiveness as number two of the more interesting four.
现在说一下生理吸引力,这是第二个有趣因素。
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Okay, so with your little clicker you can press one, two, three, or four depending on which one of these you believe is the case and let's see if the--if it registers.
拿着表决器的人可以,根据你认为的答案 在一到四中任一项,然后看看它是否注册了
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What kind of themes? Let me talk a little bit about some of them. Let me just talk about, oh, about three or four of them, just so you can see what hopefully you'll be getting yourself into.
什么主题,这方面我说一说,我就说说,其中的三到四个,这样你就能明白,你要学什么
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And, I know I need to come up with four symmetric equi-length bonds, and let's just see, let's draw the structure here.
我想我们需要,4个对称的等长的键，让我们画出CH4的结构。
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We finished with this idea of the genre, of the four movements, so then let's go on to talk about the piano concerto.
我们讲完这种风格和它的四个乐章,下面要探讨的是钢琴协奏曲
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Let's try something like four, which is what? Methane.
试试配位原子有4个的，那是什么东西，甲烷。
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Well, let's call this same algorithm, on input of four elements.
我们调用相同的算法，其输入是4个元素。
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So, let's go and put the one, two, three, four, five, six here.
因此，我们继续,一共1，2，3，4，5，6个电子。
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Let's do one, two, three, four, five, six here.
，2，3，4，5，6个。
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Let's move to a four-chord chord progression.
我们接着来看包含四个和弦的和弦进程。
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One is called the twenty-four hour recall and that's either done by a computer, or done by a trained interviewer who would sit down with you and say, 'Let's reconstruct everything you've eaten in the last twenty-four hours.' And so then you have to recollect everything you ate in the last twenty-four hours.
其中之一被称为24小时回顾法,可由计算机完成,也可以由专业测试人员,坐在你面前并对你说,"让我们记录所有,最近24小时你所吃的东西",然后你需要回忆,最近24小时内吃了什么
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Sixteenth because we've got four impulses for each beat. Let's go on to the next here now a couple of questions we could ask.
十六分音符,因为每拍有四个冲动点,我们继续,还可以问几个问题
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All right, so in terms of s p 3 hybrid orbitals, let's combine all four together on one axis, because this is what's going to happen in an s p 3 carbon atom.
对于sp3杂化轨道，让我们把4个结合起来，因为这是sp3碳原子中发生的情况。
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All right, so that's s p 3 hybridization, but those aren't the only type of hybrid orbitals that we can form. Let's take a look at what happens if instead of combining all four orbitals, we just combine three of those orbitals, and what we'll end up with is s p 2 hybridization.
好了，这是sp3杂化，但这并不是我们可以,形成的唯一类型的杂化轨道,让我们来看看，不是四个轨道结合，我们仅仅结合3个轨道。
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