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Now, we are very gentle in this course with respect to knowing integrals, but this is one you have to know.
这门课对积分,的要求并不高，但这个积分你们必须会算。
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So this is a new one, but you know, it happens. It's dangerous.
所以，我现在骑的这辆就是新车。但是这种事情经常发生。很危险。
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I don't know if you heard this morning, but there was news of the discovery of yet one more element.
我不知道你们今早听说了没，有一个新发现,一个新的元素的发现。
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This is one picture that probably you all know what it is when you see it, it's a familiar looking image.
这张图片,一眼便知其中乾坤,太眼熟了
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I don't know. If you've ever seen a movie - well, there are lots of movies that do this; one of the first movies that did this was "Who Killed Roger Rabbit?"
我不知道，如果你们看过那部电影,当然，有很多电影都描写过这一点，其中一部较早的,电影表现了这一手法--《谁谋杀了兔子罗杰》
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For some of you it may be difficult I know that and I want you to rest assured that no one in this course wishes to undermine or malign religious faith any more than they wish to promote or proselytize for religious faith.
我知道对你们中的另一些人来说这门课会有困难,不过我想要你们放心,这门课上没有人想要破灭和诋毁宗教信仰,同样也没人想要劝诱他人信教。
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And, as you know, Einstein made many, many, many very important contributions to science and relativity, but he called this his one single most important contribution to science the relationship between energy and frequency and the idea of photons.
于这些波包里，你们也知道，爱因斯坦在科学和相对论上,做出了非常非常非常多的贡献,但它把这个叫做他对科学,最重要的贡献，就是能量和,频率之间的关系以及光子的概念。
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Second thing we've got to worry about is, what's a basic step? All right, if I bury a whole lot of computation inside of something, I can say, wow, this program, you know, runs in one step. Unfortunately, that one step calls the Oracle at Delphi and gets an answer back. Maybe not quite what you want.
我们需要担心的第二件事情就是，什么该作为一个基本的步骤呢？,如果我把一大堆的计算过程放到里面，我可以说，噢，这个程序你知道的，一步就完成了，不幸的是,这一步可能要靠预言家才能得到答案,这可能跟你想要的结果不太相同吧。
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You know, no one says that you can fire the head of the General Motors, by giving them this money, but once you decided they can do it, they can do it.
你知道，没有人说,你能让大众汽车的总裁走人，给他一笔钱，但一旦政府决定你能做，你就能做。
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So, give me two more minutes, I'm going to end, and a few of you, faces, I've heard this before, people that I know; but, I guess one reason why I'm in history--well, because I read a book a long time ago.
所以,再给我两分钟,我就要结束了,你们有些人,面孔,这我见过,有的人我认识,但是,我觉得我之所以搞历史,因为我很久以前读过一本书
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I rent a lot of DVDs, but... You don't know this one particular? -No.
我借过很多DVD，但是这个。,你唯独不知道这个？，恩。
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Well, this is one event. This is called, you know, Earth Day.
这是一个活动，叫做地球日。
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There's just one more thing you need to know about this phalanx mode of fighting.
关于这种方阵模式的战斗,还有一点需要你们知道
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I was just going to--I don't know if this is one of the things, you can eat it and you can metabolize it and trap the energy.
我想说,我也不知道说的对不对,可以食用,被代谢,并从中获取能量
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But the question is, is this the most general answer, or is it just one answer, and I think you all know that this is not the most general answer.
但问题在于,这是不是通解,或者说这是否只是一个特解,我想你们都知道,它不是通解
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But one of your co-workers says, "You know, this is really important."
但是有个同事表示，“你知道，这事真的很重要。”
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So I could refer to the 4' carbon and you'd know I'd mean this one, or the 2' carbon you'd know I mean this one.
所以当我说,4'碳的时候你就知道是讲到哪个碳,2'碳的话就是指的这里
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John the Divine had written in Revelation 14 -- you know this: and no man could learn that song but the one hundred and forty and four thousand, which were redeemed from the earth.
圣约翰在《启示录》第14卷中写道--你们都知道：,没人唱的了这首歌，除了那四千一百四十人,那些被从人间救赎的人。
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If you go on to study more about immunology, which I know most of you will, you will recognize that I'm-- this is just the simplest level of one of the most complex systems within our body.
当你们更加深入了解免疫学时,我知道大多数人会的,你们将会意识到,我现在只是对免疫系统,这一人体内最复杂的系统做最基础的介绍
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You know about retroviruses, the most famous and important one at this time is HIV, which is a retrovirus.
你们应该听过逆转录病毒吧,现下最为知名而重要的 HIV,就是一种逆转录病毒
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They do that because the bases can interact with one another in particular ways, and this you know about.
它们结构稳定,是因为碱基之间,以特定方式相互作用,这是你需要知道的
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One copy of the chromosome comes from the egg and one copy of each chromosome comes from the sperm, so this you know about.
其中一条染色体来自卵子,另一条来自精子,这些你们都知道
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I know this is a simple example, but when you mature as a programmer, one of the first things you should do when you sit down to tackle some problem is write something like this pseudo code.
我知道这是个很简单的例子，但是当你们成长为一名程序员后，当你们碰到问题后第一件事情就是,该写一些类似于,伪代码的东西。
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And five weeks less one day later I decided you know what this might actually be for me and I switched from pass-fail to letter graded status at that point in time.
而第五周的最后一天,我从上及格-不及格制的课程转为上数字学分制的课程,你们可能知道这对我来说意味着什么。
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Synthesis always occurs in one direction and that makes sense to you now because you know there's a directionality and the chemistry is different going one way than the other and this DNA polymerase only works on the chemistry going in one direction.
NA复制过程是单向的,现在你们该明白原因了,因为DNA单链有方向性,DNA在两个方向上化学性质不同,DNA聚合酶,只在一个方向上起作用
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If you go to the dining hall you know, the portions-- one person serves themselves this much of a food and another serves themselves another, and then when you go to a restaurant there are variations on how much you get served of things, and so it's very hard to estimate portions for people.
如果你去食堂,摄入量是指,一个人吃了自己的那部分食物,或其他人吃的他们的那一部分,当你去餐厅,每次吃多少是变化的,因此估算每个人的摄入量是很难的
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