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One more thing, I said they're not independent, so we have to talk about the covariance between the returns.
还有，我说过它们不是相互独立的，因此我们还需要讨论两个收益率的协方差。
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We didn't just need that n, not just the principle quantum number that we needed to discuss the energy, but we also need to talk about l and m, as we did in our clicker question up here.
我们不仅需要ｎ,不仅要这个可以,决定能量的主量子数，还需要ｍ和ｌ,就像我们做这道题这样。
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And I want to stress this, we're going to come back to it later on in the term, so the way I'd like you to think about it for now, is that somewhere in the machine, there's a big space that contains all possible values.
我想要强调一点，我们在晚些时候,还会回头来讲这一点，因此现在,我需要你们形成这么一个观点，就是在计算机的某处，有一个包含了所有可能值的,很大的空间，好。
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It would be much better if you had a reference point that didn't care where the pressure was.
我们还需要精确地定义气压,你必须知道气压的大小,当然如果我们能找到一个。
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We just want to get a rough idea so we can tell me they need to have another 20 or they need to have another 100.
我们只是想得出个大概的数目,这样我们就可以告诉他们,是还需要20本还是100本。
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Not all the technologies that we need to help people To learn better are necessarily available today.
我们今天还不能获得所有我们需要的技术,用来帮助人们更好地学习。
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Once we sort of settle into this vocabulary, and once we get used to this clearly unquestioningly scientific perspective, why on earth do we need pseudo-statement or fiction at all?
一旦我们习惯了这种用语，一旦我们习惯了,这种科学视角，我们为什么还需要伪陈述和虚构呢？
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If you decide to opt in by a pass fail, I just need to sign your white study card or if you wanna decide before the 5th Monday, just grab the pink slip and I can sign that and you can turn that in at any point and I'm happy to chat during break today or after class if you have any questions or concerns.
如果你上我们的课程只是要一个分数，那么我只需要在你的白卡片上签个名就可以了,或者说，如果在第五周的周一前还没考虑好，把你的解聘书拿来，只要我签个字,任何时候你都开以离开我的教室,当然，如果你有任何问题和疑虑,我也很高心和大家做课下交流。
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That seems,more or less, the right answer from the physicalist point of view, although as we'll see probably later today, we need to refine it somewhat.
这或多或少，是从物理主义者角度得到的正确答案，纵然我们后面还会看到，这个答案是需要完善的。
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.. So, we are setting up our-- you have already gotten email and you've talked about setting up your review sessions-- so I have a few more minutes here.
现在我们要建立我们的-,你们都已经收到邮件了吧,你们都知道需要安排一下复习的时间-,然后我这里还剩下几分钟。
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I actually need to check the second order condition.
实际上我们还需要验证二阶条件
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Generally I can bear who is now Ambassodor said you need to have the engineers following 1 kilometers behind the troops when they entered to this areas to show the people that we were there, we were there to stay. That remains true.
我可以理解现任大使所说的,紧跟着军队之后，我们还需要工程师来建设这个国家,这些工程师进来之后，当地人民就知道我们在这里，我们要留在这里，而这也是事实。
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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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So, remember when we talk about Coulomb force, what's holding the nucleus and the electron together, there's 2 things we need to think about.
还记得我们在讨论库仑力的时候，提到是什么将原子核与电子束缚在一起时，有两点需要考虑。
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OK. You can see that thing is cutting down the problem in half each time, which is good, but there's one more thing I need to deal with.
这很棒，但是我们还需要处理另外一件事情,让我们仔细来看看,我在开始做之前一直在说，应该先试验试验。
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And at the same time,we also need to cultivate the positive, to think more of the zero to the positive side of the equation as well.
同时，我们还需要培养积极性，探究如何让我们从零点升到正直,该如何做。
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We need to posit the soul, something immaterial that survives the death of the body, that can leave the body, go up to heaven; though, as it happens in these cases, the tie is never completely broken.
我们需要假设灵魂,某种非物质的,能在肉体死后还存在的东西,能离开肉体,升入天堂,尽管,正如在这些例子里发生的,它们之间的联系从未完全破裂
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The examples we've done so far have been pretty straightforward, so we haven't needed to use formal charge to make this kind of decision.
我们之前做过的例题,都是非常简单直接的，因此我们还不需要,用形式电荷来做这种决定。
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What we're justified in believing are those things that we need, not simply when they would offer us some kind of explanation, but when they offer us the best explanation that we can think of.
我们确信我们需要某些东西,不仅在于它们为我们提供了某种解释,还在于它们能使我们,想出的最佳解释
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We know we need to divide by 266, 266 but what we need you to help us with is to figure out this top number here and see how many particles are going to backscatter. So if the TAs can come up and quickly hand out 1 particle to everyone.
知道背散射的概率就可以了，我们知道要除以,但还需要你们来搞清楚,分子上的数是多少，有多少个发生背散射的粒子,助教们请过来,把这些球分给同学们。
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I think that part is fine, but behind that you need something to replace what was there When you have peace then you need to bring in stablity that means economic stability as well as security stability You need the police. You need the government. You need the economy.
我认为计划本身是好的，但还需要一些东西来填充以为以前的空缺,和平了，你就需要稳定，经济稳定，安全局势的稳定等,我们需要警察，需要政府，经济也要发展。
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And I also wanted you to identify why, it's also important to understand why we have these trends, not just to memorize the trend itself.
而且我还需要大家判断原因是什么，这很重要，对于我们理解,为什么有这些规律，仅仅记住这些规律是不够的。
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So, we can also get into a case where we have similar values in terms of absolute values of formal charge between two different molecules we're deciding between in their Lewis structures.
我们还可能遇到另外一种情况,那就是在我们需要进行,选择的两种路易斯结构中,形式电荷具有相似的绝对值。
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Well, this is the question raised by the skeptic about skepticism or about theory and it's one that we're going to take rather seriously, but we're going to come back to it because there are ways, it seems to me, of keeping this question at arm's length.
这是由对怀疑论或理论持怀疑态度的人提出来的问题,也是我们要认真探讨的，但是我们还会回来继续讨论，因为对我而言，我们需要和这个问题保持一定距离。
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You also need to know how you got there.
我们还需要知道。
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So, in terms of finishing our Lewis structure, we're actually not done yet here, even though we have full octets, and we've used up all of our valence electrons, and the reason is because it's c n minus, so we need to make sure that that's reflected in our Lewis structure, so let's put it in brackets here, and put a minus 1.
那么，根据我们的路易斯结构的完成情况，我们实际上还没有全部完成，尽管我们有了填满的“八隅体“,而且用完了所有的价电子，原因就是因为这是一个负离子，我们需要确保我们的路易斯结构能反映出这一点，所以让我们给它加个括号，再加个负一。
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So there's going to be lots of times in this class when we get to play games, we get to have classroom discussions and so on, but there's going to be some times when we have to slow down and do some work, and the next twenty minutes are going to be that.
我们在课上会经常,通过游戏学习博弈,我们还会举行随堂讨论等等,但是我们也需要花费一些时间,来慢慢研究一些问题,接下来的二十多分钟就是这样的
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So this is not even thinking about the other electron shielding, just if we think of the fact, all we need to think about is that the effect of going to a further away n n as we go down the table.
到现在我们甚至还没有考虑,其它电子的屏蔽效果，即使我们要考虑这个因素，我们需要考虑也就是,沿着周期表的某一列往下走，距离会逐渐变远,将起最重要的作用，actually，dominates,这一结果所产生的影响。
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If we have a double bond, we know we need to have only one sigma bond, and we're also going to have one pi bond.
如果我们有双键，我们知道我们需要一个sigma键，还需要一个π键。
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