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So, why don't you go ahead and take 10 more seconds on this second clicker question for our intro.
请大家再花十秒钟的时间,来做一下第二个选择题。
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and I enjoy, like, solving proofs or, like, solving problems, but it's only one part of like, what I do, like as a person.
做证明题或者解决问题对我来说是一种享受，但这只是我生活的一部分而已。
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All right. It's 12:05, so why don't you go ahead and take 10 more seconds on the clicker question today.
好，现在已经，12：05，了，请大家,花十秒钟的时间做一下今天的选择题吧。
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And, that's a good thing to know because if you come out with an answer that's somewhere near the diameter of the universe and it's supposed to be the diameter of an atom, then you will know that you probably made a mistake.
这是我们需要知道的,因为当你做一道题得到的答案,是宇宙的直径,而正确答案是原子直径时，你能很快发现你的错误。
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If you look at x 2 this one right here in your handout. OK.
课堂材料的第二题2,这是关于做乘方的另外一种方法。
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You're going to get these personality tests all the time and the personality tests-- You're applying for a business and " one of the tests says "I like to steal from my bosses " Well, I don't think so No That's a little IQ test right there ? So, the question is how do you avoid that problem?
你们以后会做很多这样的性格测试,例如：你求职时做性格测试,其中一题是“我想偷老板的东西“,不，我不会,这相当于一个智商测试,问题在于，你怎么避免那个问题？
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We don't know the time and we don't know how high it's rising so you can ask, "How am I supposed to deal with this problem?"
我们既不知道时间,又不知道最高点的高度,那你就会问了,这道题该怎么做呢
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And secondly, I think that, even if they don't know how to do a problem,
二是，我觉得，即使他们不知道怎么做一道题，
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3 So here what I'm doing is 17 divided by 13, but because of this parenthetical, , -- because of that parenthetical -- that has nothing to do with math; -- this is a programming language thing -- that is a casting operation.
所以这里我要做的是用17除以，但因为这样的题外话，因为那样的题外话-,还是没有做完这个数学题;,这是一个编程语言的东西-,那是一个计算操作。
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And you went ahead and worked with the Listening Exercises nine through eleven to engage the musical instruments a bit in those particular exercises, and we have performers here today that are going to, as you can see, demonstrate some of these instruments for us.
你们先前做过,听力练习九至十一题,在这些练习中,你们增长了对乐器的一些认识,今天我们请来了表演者,你们将看到,他们稍候,将为我们在这里演示一些乐器
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Just force yourself to sit down in the testing environment
强迫你自己在考试的环境里做题，
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But remember that you do have recitation on Tuesday, so that could be very helpful with the problem-set, so be sure to go to recitation on Tuesday, and have a great long weekend.
记住，周二有习题课，这对做课后题很有帮助，所以周二一定要来上习题课，周末愉快！
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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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So, let's make sure everyone kind of has this down, let's do another clicker question here.
好，让我们确保每个人都记下了这点，来做下一个选择题吧。
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So let's go to a clicker question.
那么让我们来做一个选择题。
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So let's do a quick clicker question, and you tell me how many valence electrons does fluorine have? Remember, valence electrons are different from core, they're only the outer-most electrons in the outer-most shell.
那么让我们来做一个小选择题，请大家来告诉我,氟有多少个价电子，要记得，价电子与芯电子不同，它们是在最外壳层的最靠外面的电子。
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And Timlin who is about 91 miles per hour, Timlin So, why don't you take ten seconds to do that.
我们的继投手之一，能做到91公里每小时，one，of，our，relievers。,你们为什么不再花10秒钟,来做这道题？
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We're actually going to do one more clicker question to get started with today, and as we do, I'll explain something we're going to be trying today, which is a little bit of a friendly competition in terms of answering the clicker questions correctly.
我们将在开始讲授今天的课程之前,再多做一个选择题，我先来说明一下做这件事的原因，这实际上是一个,回答选择题的小比赛。
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So, let's do a clicker question on isoelectronic atoms.
那么，让我们来做一个关于等电子原子的选择题吧。
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OK, great. Good job on the clicker questions today.
好的，非常好，今天的选择题都做得太好了。
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So when you go ahead and draw these on your problem-sets or on your exams, it's a good idea to put these dashed lines in, both for you and for people reading it to see exactly where your molecular orbitals are coming from.
所以当你在做课后题,或者考试的时候要画这些图时，最好把这些虚线放进去，既方便你自己也方便别人知道,这些分子轨道是从哪里来的。
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So why don't we go to a clicker question here, and see if you can tell us this.
为什么我们不做,一个课题表决题呢，来看看你们是否能回答我。
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As you're settling into your seats, why don't we take 10 more seconds on the clicker question here.
你们现在都坐在座位上了，为什么不用10多秒的时间,来做这道选择题呢？好的。
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Can you go ahead and take 10 more seconds on this first clicker question here? OK.
大家先来花十秒钟的时间,把第一个选择题做了好吗？好。
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Why doesn't everyone go ahead and take ten more seconds on the clicker question.
每个人为什么不开始做课堂表决题呢,只需要10多秒的时间。
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Could everyone take 10 more seconds on the clicker question.
请大家先花十秒钟的时间,来做一下这个选择题好吗？
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So, let's do 10 seconds on this problem here.
我们用10秒钟做这道题。
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But it is in fact indicative of what's actually going on underneath the hood and for a forensic investigator to be honest and even problem set 5, it poses a potential wrinkle if those JPEGs, those photos we took are not contiguous back to back to back but are all over the place.
但是实际上就像那些法医调查员,所做的实质说明,其实对套题5也是如此，如果那些JPEG文件有问题，我们将其数据不能连续的,放回原来的地方，那么图像会呈现出波纹形状。
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