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They are quite distinct from each other, and you should be able to manage with that final exam without undue difficulty.
它们都各有特点,你需要在期末考之前解决所有困难。
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that it's not needed that you don't want whatever it is near you or around you
你不需要这些东西,甚至当它们出现在你身边时你也不想得到。
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So what we end up with in terms of our bonding electrons is going to be 6 bonding electrons.
因此最终我们需要六个成键电子,那么我们可以来把它们填上。
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So, you need some reference points to be able to tell you, OK, this temperature is 550 degrees Smith, whatever.
你需要定要一些参考点,它们告诉你，“这个温度是550史密斯氏度“之类。
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But look at the lattice energy, the Madelung energy component is huge which tells you that when ions form they really want to continue to glom onto one another and form that giant crystal.
看看晶格能，马德龙能很大,这告诉我们，当形成离子是,它们如果要继续的话,需要从另外一方夺取电子，形成巨大的晶体。
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Moreover they can also borrow from the Federal Reserve Banks when they're in trouble and need money and that's supposed to help prevent banking crises.
更多的是，当它们陷入困境,需要钱时可以,从联邦储备银行那里借钱,这样可以帮助阻止银行业危机的产生。
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What's variable about them is that they bind to a specific antigen.
它们可变的原因是,它们需要结合不同的抗原
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We can say there's a great deal to learn about what people think literature is and we can develop very interesting kinds of thinking about the variety of ways in which these ideas are expressed.
可以说，关于人们对文学的定义,我们还有很多需要学习,我们也能从它们的各种不同的表达方法中,产生有趣的想法。
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Notice here that it's different than the binary search case. We're certainly dividing down, but the combination now actually takes some work. I'll have to actually figure out how to put them back together. And that's a general thing you want to keep in mind when you're thinking about designing a divide and conquer kind of algorithm.
一个分治的例子,注这里，与二分查找所不同的地方,我们肯定是分解了,但是合并的过程还是需要一些工作量的,我会详细说明怎样把它们合并在一起的,当你在考虑设计一个分治算法时,这是你要必须记住的最基本的东西。
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She can hear when the ambiguity creeps in between the words, and that tells her that she needs to find something out.
当这些含糊的东西，出现在字里行间，她能够听到它们并且感觉自己需要发现些什么。
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The biggest thing for me on that path is I needed to draw something out and I needed to get it out of my head.
在我看来，这条路上最重要的莫过于,是需要描绘出一些东西,再把它们忘却。
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They have various ideas about which pieces are more powerful and so they're more important to protect.
它们会想,哪些棋子的威力更大,需要重点庇护
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In order to not act in a stereotyped fashion, we have to consciously push them down, we have to consciously override them, and that's possible, but it takes work.
为了不表现出刻板印象，我们要有意识地压抑它们，我们要有意识地钳制它们，这是有可能的，但需要下功夫。
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I know it's gonna take me a lot of work on the order of N squared steps to sort these things.
要对它们排序就要进行大量的工作,大概需要N平方步。
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He needs to know about the structures of the molecules, because if the structure is wrong it's not going to work.
他想要让它们成键，他需要知道分子结构，因为如果结构不对。
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So, basically what he's showing in these cubes is that there are eight spaces that need to be filled up to have a full cube.
因此，基本上他在这里展示是这些立方体中一共有,八个位置，需要把它们都填满才得到一个完整的立方体。
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And we won't just use them in this class.
而且我们不只是在课堂上才需要用到它们。
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What is this? This is a wonderful piece of abstraction. It is saying, you don't need to know squat about what's inside the body of this function. You don't have to worry about the parameter names, because they're going to be preserved, you don't need to worry about how I'm doing it, this tells you how you can use this, in order to use it correctly. Of course, I can then close it off, and off we go.
但是这能告诉你一些信息,这是什么？,这是一段完美的抽象,它的意思是你不需要知道,这个函数的内部构造，你不必担心参数是否重名，因为它们已经被预存了,你不需要担心我如何使用它,它告诉了你你该如何操作，从而正确的使用它，当然我也可以把它关掉。
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But, I've dropped that assumption and now I'm going on to assuming that they're taking account of their dependence on each other, taking account of their different expected returns, and taking account of their different covariances and variances; so that's what we've got.
不过我已经放弃了那个假定,我现在假定,我们需要考虑它们彼此间的相关性，它们有着不同期望收益，不同的协方差和方差;,这是我们所学到的。
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Because you trust biomedical engineers to have done a good job in designing these things and we'll talk about how biomaterials are designed and tested, and what makes a material, the properties of a material that you could use as a contact lens, what are the properties that it needs to have.
因为你深信生物医学工程师们,在设计这些材料时,已经做了充分的工作,我们会讨论如何设计和测试这些生物材料,什么材质具有,能够用来,做成隐形眼镜的材料的属性,它们需要具备的特性究竟是什么
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So if we consider lithium, potassium, and sodium, they're all together in the same group on the periodic table, knowing what we do about biology we can immediately think of sodium and potassium, or even just knowing what you know about table salt, for example, that these are two elements that we find, and particularly in the ion form in very high concentrations in our body.
我们来考虑一下锂，钾和钠，它们都在周期表中的同一族里，想要知道我们将元素周期律,用到生物学会怎么样，我们首先想到的就是钠和钾，甚至只需要知道食盐，我们发现它们是以很高浓度的离子形式,存在于我们体内的两种元素。
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The other thing about it is that you could make lots of things that are new but generally you think of engineers as making things that are not just new but they're useful, that they do something that needs to be done, and that they do something that improves life, the quality of life of people.
另一个区别是,科学家会做很多很多新鲜玩意儿,而一般来讲,工程师做的东西不只是新奇,它们还很有用,他们做那些需要做的东西,他们做的东西能够提高,人类的生活水平和生活质量
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You need to know how to think about them in the same way we think about s and p orbitals, but for example, you don't yet need to know what all of the names are except for this 3 d z squared here.
你们只要知道，如何像考虑s和p轨道一样,来考虑它们，但你们不需要,知道它们的名字,除了这个3dz2轨道外。
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It's kind of ironic that we put this in the same lecture as we talk about atomic radii, which we also call r, but they're two different r's, so you need to keep them separated in terms of what you're talking about.
有点讽刺的是,我们在同一堂课里还讨论过了原子半径，它也是用，r，表示的，但是它们具有不同的意义，因此大家需要注意区分它们,弄清楚我们讨论的是哪一个。
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You handle them very special in terms of being extra careful in a very high ventilation area, in hoods is how you handle them.
在使用它们的时候你需要格外小心,必须在通风条件非常好的地方，在通风柜中才行。
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Because maybe you ate more glucose than you needed immediately and so it goes into cells that can store glucose.
因为你摄入的糖可能比你需要的糖更多,因此它们就进入那些有储糖能力的细胞中
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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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So, we take our two equilibrium states, and you just put an equal sign between them, and the equal sign means go from one to the other.
我们写出两个平衡态，然后你只需要在它们之间放一个等号，等号表示,从一个过渡到另一个。
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Remember, we don't do a one-to-one correlation, because p x and p y are some linear combination of the m plus 1 and m minus 1 orbital.
记住，我们不需要把它们一一对应，因为ｐｘ和ｐｙ轨道是,ｍ等于正负１轨道的线性组合。
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They're making that because you need this protein insulin, it's a hormone, and it's important for sugar metabolism in your body.
它们产生胰岛素蛋白是因为你需要它,胰岛素是一种激素,它在糖代谢中起着非常重要的作用
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