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The second way to have something that is net nonpolar is to have spatially symmetric disposition of polar bonds.
第二种构成,需要空间非极性,就是需要极性键的空间对称分布。
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The first way is just to turn the crank on the math, and the second way is to do a little bit more imaginative about the process.
第一个方法就是纯数学推导,第二个方法我们将对,这个过程做一些物理图像的想象。
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You might be winded doing it the second way, but when you get to the top and you are at the 60th story your gravitational potential is independent of how you got there.
对于走路你可能很抓狂，但你一旦到了顶层,你就是在第60层,你的重力势能,与你如何到达那里无关。
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The second one is, you're terrific, you are better than average in every possible way, each one of you.
第二个发现是自我感觉良好，你不管在什么方面都比一般人优秀，你们每个人都这样认为。
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Hang on a second, everyone see that 10 is going to be dominated by 9 in exactly the same way?
稍等一下,大家都应该能看出来同样的,立场9优于立场10对吗
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google Imagine you want to search through Google to find a particular page. You want to do it in a second. And you're going to just do it the brute force way, assuming you could even reach all of those pages in that time.
假设你想通过,搜索一个特定的网页,你想在1秒内得到结果,然后你就只管去做了,认为能在1秒内遍历遍所有的网页。
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So, that, for me, was kind of the first connection that what went, "Woah, wait a second, I want to be thinking about these molecules all the way down to the level of individual atoms."
接下来我遇到的一个问题,哇哦，等等，让我想想，是我在学习,有机化学的时候“
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That piece of it, which is gone when the second half disappears, that piece of it is what he tries to communicate in a very condensed way.
这段后来消失了，他是想通过简洁明了,的方式来讲述。
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And this second week of Harvard is fantastic and it was going to continue just that way, constant tide for the rest of your life.
在哈佛的第二周妙不可言,这种情况将持续下去，余生将是一浪高于一浪的快乐。
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So, the way to measure force is in kilogram meters per second squared.
所以,力的单位是千克米每秒平方
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Now, one of the advantages of having second messengers is this is one way that you can integrate between different receptor systems that are acting inside a cell.
使用第二信使分子的好处在于,它能够将,作用于细胞内部不同的,受体系统结合起来
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Today we'll do the first way, and then next time we'll do the second way.
证明这个式子，今天讲一个，下次再讲一个。
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And the second thing we're going to need, is we're going to need a way to give instructions to the computer to manipulate that data.
我们需要的第二件事情是，我们需要一种,能给予计算机指令,以操作数据的方式。
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But, of course, we want to go all the way to distance, so we take the second derivative and we have this equation for force here.
当然我们最后想要的是距离,所以我们取二阶微,分就有这个式子。
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A second question is, "What are the effects of being judged that way?"
第二个问题是，“他人对你的看法，会对你产生什么影响？”
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We'll get to oxidation number in the second half of this course, but it's not in any way the same idea as formal charge.
我们会在课程的后半部分讲到氧化数，但它和形式电荷完全不是同一个概念。
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But it's amazing, that every year you find somebody coming up with a way of going around the second law and somehow convincing people who are very smart that this will work.
但是很令人惊奇，每年你都能发现,有人宣称找到了,绕过第二定律的方法,还不知怎么地就说服了,一些非常聪明的人,让他们以为这个真的管用。
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All right. Second question: or maybe a better way of saying this, and the general format you're likely to see here is, a test involving a variable name, which must be initialized outside of the loop, and which interior to the loop gets changed, so that the test is going to change.
好，第二个问题：,换种更好的方式来说吧，你们通常喜欢的,方式是，这个测试涉及到一个变量名字，变量在循环外已经被初始化，然后循环内部会改变这个变量的值，因此测试结果会改变。
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Now, the good news in all of this is the studies that looked at physical attractiveness in this way were just looking at what predicts a second date after a first date.
好消息的是,这只是一种研究生理吸引力的实验,关注点是,预测相亲后约会可能性的因素。
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