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"I was actually really lousy in science class." "So now I'm picking up the information as I can get it."
VOA: standard.2010.05.04
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So there was a good question in Wednesday's class about the de Broglie wavelength and if it can actually go to infinity.
在周三的课上有个关于德布罗意波波长的问题,非常好，就是它能不能到无穷大。
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so you can, like, study all your class notes and your readings and then take the practice exams,
所以你可以，好好看一下笔记和阅读材料，接着参加模拟考试，
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"As you can say for this demonstration I think they should focus more - I mean truly focus - on what the working class or the labor unions really need."
VOA: standard.2009.03.09
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You can't take the exam unless you're registered for the class, and we need to make sure we can verify that.
否则你是不能参加这次考试的,除非你注册了这门课，而我们需要确定你能证实这一点。
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One of the things we want to help you do is identify the different classes of algorithms, what their costs are, and how you can map problems into the most efficient class to do the computation.
我们想要教会你们的事情之一就是,学会辨别不同种类的算法，它们的代价是怎么样的，以及怎么样把问题映射到,最有效的算法种类中去做计算。
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7% 77% is class average and the standard deviation was 17% so you can see where things lie. 50% is a pass.
7是平均水平，标准偏差是%,这就是事情所在，50%就及格。
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So if you can have a piece of paper here, and you fold it 41 times by the end of the class, you can reach the moon.
如果你们有一张纸，再在下课之前折叠41次，你就能碰到月亮。
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They can have a pink hat at the end of the class?
粉色的帽子就送给你了
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D-A-V-I-D Well, if I've got a five-letter word like D-A-V-I-D, well, that's like five bytes and yet we only have the ability thus far in this class to return one thing at a time I can't return five bytes to you, but wait a minute, those bytes by nature of a computer are just stored in RAM.
好的，如果有5个字母的单词，如，那是5个字节,我们只能返回一个东西,而不能返回5个字节，等一下，这些字节被计算机本能地,存储在内存中。
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What the clicker is is a little device that will allow you to enter responses to questions that will then get entered into my computer and we can show immediate poll results from the class.
表决器是一种小型设备,你可以通过它回答问题,这些答案会传进我的电脑,我们就可以迅速地得到投票结果
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So always amazing to us how we go into the problem, our eye or mind can see one class of solutions, but the math will tell you sometimes there are new solutions and you've got to respect it and understand and interpret the unwanted solutions, and this is a simple example where you can follow what the meaning of the second solution is.
解决问题的方式总能让人惊喜不已,我们的眼睛或思想可以看见一类解,但数学有时会告诉你还有新的解,你不能忽视它,而是解释这些不期而至的解,这只是一个简单的例子,由此你可以理解第二个解的意义
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how can you have a platonically just city if most people in it, certainly most people of the auxiliary class are deprived of the pleasures ? and the goods that we desire?
如何建构一座柏拉图式的正义之城,如果大部份居住其中的人，尤其是那些后备阶级,所渴求的愉悦,与动产都己被剥夺？
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And while I'm at school in class, I can use the e-books of the courses that I'm studying.
在学校上课的时候，我也可以使用那些我修的课程的电子材料。
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He does go around and around the same idea a number of times, which does cut down on the notes for the class, " but it can get a little boring."
他的确一遍遍重复同样的观点很多次，从而减少了课程的笔记内容，但是会让人感到有点无聊“
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Can you tell us about one of the stories that you've learned in your classics class?
你能跟我们说说你在古典文学课上学到的一个故事吗？
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This is the last question we'll see in class on the photoelectric effect, so hopefully we can have a very high success rate here to show we are all ready to move on with our lives here.
这是这个课上最后一个关于,光电效应的问题，所以希望,你们能有个高的通过率,来证明我们已经可以继续往下走。
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All right. So, we can switch over to the class notes.
好，我们可以转到讲义上来了。
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This is boring. In fact, you can do some nice things to prove what is the class of functions you can compute with straight-line programs, and what you'd see if you did that is, it's not particularly interesting.
这很无聊，实际上，你可以通过做一些很有趣的事情,来证明你可以通过直线程序,来做很多功能，但是你也看到我们之前讲过的了，这不太有趣。
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But I hope to doing the next couple of lectures is giving you an idea what this class is about so that you can decide whether or not it is for you.
但希望几堂课后，你能有个大概印象,让你决定这门课是否适合你。
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So you can imagine that adds real excitement and energy to the class and puts a little bit pressure on the professors to make sure that we have something worth coming half way around the world for.
可以想象,为课堂带去的兴奋和活力,也给教授施加了压力，我们要确保,能传授值得绕半个地球赶来学习的知识。
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By the way, after class, I'm more than happy to stay as long as needed to answer any questions you guys have or to talk about whatever issues you'd like to bring up, but probably what makes sense is for me to power down the computer and pack up and then we can stand out in the hallway and I can answer questions out there, that way the next class can get in and the instructor can work unimpeded.
顺便说一下,课后,我很乐意多待一会,来回答你们的问题,或者讨论一些你们提出的问题,但我最好是,把电脑关掉,收拾好东西,然后在走廊里来回答你们的问题,这样下节课才能照常进行,老师也能正常授课
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One thing I can guarantee from past experience in this class, is that the median grade will be a B+.
不过从教学经验看,中间成绩应该是B+
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Now I have the ability to say, I've got a new class, I can create instances of a line segment, and it's elements are themselves instances of points. OK?
这就是我们要讲模块化的地方了，现在我可以说，我创建了一个新类，我可以创建线段的实例了,这些实例的元素？
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You can stop me any time and you should not feel somehow you are stopping the progress of the class.
你可以在任何时候打断我,而且你不必担心,你的问题就会打断课堂的进程
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So this application is not as important as soccer, but it's a bit more Economicsy, so I can justify it under the Economics title of the class.
虽然接下来的案例不如足球那么重要,不过它们都是经济学案例,所以我们可以用经济学的知识来解读
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Under-nutrition--now I'm going -this slide has a lot of information on it and I'm going to come back to it in the class where we talk about hunger, but I show it today because of course undernutrition can affect every single system of the body and can have devastating consequences on people's health.
营养不良,这张幻灯片上有很多关于营养不良的信息,以后讲到饥饿的时候,我会再回头来讲这张幻灯片,我今天让大家看是想告诉大家,营养不良一定会影响身体的每一个系统,并对人们的健康造成巨大的破坏
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If any of you guys have questions after the class we can meet outside and talk about those.
如果你们有什么问题的话,欢迎课后来找我,我们一起讨论
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So, if you by chance, I know it's very rare, but if by chance you don't get the class you can always follow up later.
如果你们偶然，我知道不太可能，但是如果不小心你们错过了某节课,你们就可以在之后补回来了。
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So you don't actually know this yet from this class, you'll know it by the end of the class that electrons can, in fact, have a wavelength.
所以如果你通过这堂课,还是没有理解，在这堂课的末尾你就会知道,事实上电子是有波长的。
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