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If you've got a problem that has units associated with it, do the exercise of carrying the units through because, guess what?
如果你做到一个跟单位有关的题目，请你在做题目的时候密切注意它，因为，猜猜是什么？
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If you Google it, it's called Volkswagen the Force. It's a really great spot.
搜索时，你会找到题目为“大众的力量”的广告。很有力度。
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So make sure first that you read the question carefully, and realize the difference that is between the two.
你们首先确保把题目看对，要注意到这两个问法之间的差别。
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So, please don't bring in your attorney if I didn't ask a question that's identical to one that you've worked.
因此请不要带你的律师来,如果我没有考的题目,和你做过的题目相同的话。
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There's one by an English traveler, he entitled it, "A Georgia Planter's Method of Spending Time."
其中有一个是英国游客写的,题目叫,《一位格鲁吉亚种植园主的消磨时间法》
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You've already seen last year's mid-term and it's going to look a lot like that.
去年的题目已经发下去了,今年的题目也会差不多
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Now we know how we got all the numbers that go into the very question.
现在我们知道,题目中的这些数据是怎么得到的
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These numbers are so low they could be dismissed as people filling in the wrong things or making jokes or just being confused compared to-- stunningly superstitious high rankings.
这些比例低到,可以把它们当成人们填错表格,或者开玩笑，或者看不懂题目造成的误差,相比于…,那些高得吓人的比例。
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There's a sense that in this memory the poet somehow saw the name-- presumably, I suppose, saw it on a signboard in the station, as you roll into the station and you see where you are.
在这种记忆中诗人不知怎么地-,我猜想他在看这个题目的时候，是在火车站的布告板上看到的，当你们涌进火车站看自己在哪的时候。
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In light of the fact that I have just sent you paper topics, my lecture today is going to do two things.
根据我刚发给你们的论文题目，我今天的课程将要完成两件事。
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That's why he calls his essay "On Literary Evolution," not literary "revolution" but literary "evolution."
这就是为什么他的论文题目是，文学进化“,不是，文学革命，而是，文学进化“
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Obviously, it's not going to be a question identical to something you've done, but it's going to cover that subject matter.
当然不会是你做过的,课后作业的题目，但是会涉及到相关内容。
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OK. So let's actually go to a clicker question now on radial probability distributions.
好，让我们来做一个关于,径向概率分布的题目。
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If the units come out in meters per second, you will quickly discover that the problems in 3.091 are just not that complicated.
如果你的单位是米每秒，你会很快发现,在3。091中的题目并不复杂。
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For example, if we talk about photons, of course, we also just mean light, sometimes we refer to this as electromagnetic radiation, and there's several ways that you might be asked this in a problem or that you might be asked to answer.
举例来说，如果我们讨论光子，当然我们也叫做光，有时候我们看作是电磁辐射，而且这里有几种方式,你可能会在题目中被问到,或者被提问回答。
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Sure enough 11:55 comes, it is the last thing they are doing.
确保到11：55时间足够了，这就是他们做的最后一个题目。
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The people in life sciences feel, "Hey, we are represented in this subject."
有过体验的人就会感觉到,"嗨,我们出现在这道题目里了"
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These problems are embellished in many ways to make you all feel involved.
这些题目以各种形式出现,就是想更贴近你们的生活
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Whenever you're asked on a problem, "What's the tension on the rope?"
不管什么题目问你,"绳子的张力是多少"
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I'm going to now start doing simple problems in mechanics.
现在我来讲解几个简单的力学题目
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Then, the next problem is a little more interesting.
下面这道题目会更有意思
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Now, there are some tricky problems in the book.
咱们书上有些题目会有陷阱
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And, it's based upon the homework subject.
它是基于你们的作业的题目。
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So the game is not just to somehow or other get the solution to the problem set but to fully understand how it's done, and the TAs will be there to help you.
所以,这个过程不仅仅是,通过某种方式解出题目,还要全面理解解题的过程,助教会帮你们的
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If I went on and told you what the different incident light was, and what the electrons were ejected with, and then you could look up the ionization energy for the particular different elements, you should be able to actually determine exactly which element it is, but just with the information given, we can only narrow it down to these choices here.
如果我继续告诉大家入射光源是什么，出射电子的动能是多少，那么你可以去查一查,以上各个元素的电离能，这样你就应该能确定,这个元素到底是哪个，但是只凭题目中的信息，我们只能把范围缩小至以上几种元素。
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That's a separate exercise.
那是一道单独的题目
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Here's the problem.
题目是这样的
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So, hopefully, if you were to go back and look you could see that this is, in fact, copper.
因此，我希望大家如果回去再看一遍,这个题目的话，能够知道这是铜原子。
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But you don't know that there is an easy one for you down at number four 4 if you haven't bothered to look at number four.
但是你不知道,在数字4的时候会有一个简单的题目,如果你没有尝试去看数字。
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If you can do this, you can do most of the problems you will run into.
如果你会做这个,那么你就能解决碰到的大部分题目了
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