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Anybody have any questions on that, because when we voted, the majority of the class thought it was reversible Yes.
上节课我们投票时，多数人都认为它是一个可逆过程，而现在大家应该都知道了,它其实是不可逆过程，有问题吗？
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And then our drop date is normally, I'm not exactly sure when, but it's actually probably in November,
然后退课的日子通常是，我不确定什么时候，不过其实大概是十一月，
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I think it's very difficult, indeed I think it's impossible, to think of anything you'd want to do forever.
我认为很难，其实我认为不可能，想出一件你希望永远做下去的事。
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And actually, what we usually eat are what are called sweet almonds, and there aren't actual cyanide in the sweet almonds we eat, there's precursors to cyanide, which might not make you more comfortable.
实际上，我们经常吃的,被叫做甜杏仁，我们吃的甜杏仁其实不含氰化物，它里面含有的是氰化物的前驱体，这可能并不会让你感到更舒服一点。
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What I want to do today is three things: I'm going to start-- actually, I shouldn't say start, I'm going to do a little bit of administrivia, the kinds of things you need to know about how we're going to run the course.
今天我要做三件事儿：,我要开始了--其实不应该说开始，我准备做一点儿文案工作，也就是关于怎么上课的,一些你们必须知道的东西。
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I actually think that film is becoming a more continual grow as one of the primary form of communication It is already.
其实我觉得电影已经成为,一种不间断的,最主要的交流方式,已经是这样了。
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Not entirely accurate about that either, from what we now know about the profitability of slavery and the profitability of the cotton crop.
这点其实也不完全正确,因为我们已经讲到过,奴隶制和棉花作物能产生巨大的经济利益
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But they didn't really know or care about very much outside of the Mediterranean area.
但他们其实并不知道,也不关心地中海以外的地区
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By the way, I've never known whether it is a fact.
其实我也从来都不知道这句话这是不是真的。
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and they haven't really thought long and hard about whether they want to be a lawyer.
其实，关于将来愿不愿意当律师，他们自己也没有仔细考虑过。
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What I realized I was doing is I was constantly making excuses for not working on it.
我意识到这么做,其实是一直在为自己不努力去做找借口。
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There's no intimate connection with sin when we're talking about ritual impurity.
我们在讨论仪式不洁的时候,和罪孽其实没有很紧密的联系。
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Yeah.It does't do mean much good to have somebody in the back like this.Ok.
有人在你后面摆弄电脑,感觉其实不怎么好
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And so this is why in problem set 5 last year when I took photographs on campus with a compact flash card, just standard consumer media and I accidentally formatted that compact flash card, I only lost the first few kilobytes, the first few thousand bits on that compact flash card.
这也是去年的套题5中,我们在校园里面用配有，简易闪存卡的标准摄像机拍照片,我不小心格式化了这个简易闪存卡,其实我只是丢失的最开头的几千个字节的数据。
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Some very obvious ideas are not so obvious.
有些很寻常的想法其实不那么显而易见。
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In fact, I would encourage you to think the way physicists do, even if you don't plan to be a physicist, because that's the easiest way to do this subject, and that is to follow the reasoning behind everything I give you.
其实,即使你们不打算以后当物理学家,我也希望你们能像物理学家一样思考,因为这是学习这门课的捷径,也就是利用我给你的条件一步一步地推导
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s a wonderful way to raise money, to raise money without saying re taxing people.
哦，这是一种绝佳的集资方式，Oh，，it’,集资而又不告诉民众,政府其实加重了税收，that，you’
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Well, it's cheap. It's not cheap, but it's cheap when you book in advance.
很便宜。其实也不便宜，但是你提前预订就很便宜。
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But they show these, too.
其实不只有两个版本。
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And--or people would talk to him and he'd just stare at them and say--and people would say-- would be intimidated by his bold and impetuous stare when actually he just totally didn't know anything.
别人跟他说话，他就会盯着人看,人们就会-,被他大胆无礼的凝视吓怕,其实他根本不知道别人在说什么。
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and it doesn't matter really at all, you know, what nation you are from.
你是来自哪个国家的其实真的不重要。
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But I don't think it's actually, more work, or more difficult work.
但我不觉得，其实，功课更多或功课更难。
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Within our own rooms, it doesn't really matter how clean they are,
我们自己屋干不干净其实并不重要，
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You might think the answer to that is no if we are physicalists but in fact it's not so clear the answer is no.
如果我们是物理主义者你可能认为,人不可能肉体不死,但其实答案没有那么明确。
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In which case,what you're discovering is you don't really believe the personality theory.
不管如何，其实是你不相信人格理论。
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You might have thought that showed--didn't Descartes prove to us that that shows--the Evening Star and the Morning Star are two different things?
由此你可能会想,这是不是就印证了笛卡尔向我们证明的,昏星和晨星,其实是两样不一样的东西
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In fact,it doesn't even claim to be a letter; it looks just like a sermon.
其实它根本不称为书信;,完全就是布道。
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One of the discomforts, one of the reasons that I think so many people in society and even in this class are uncomfortable when it comes to computers and intimidated by technology and kind of throw up their hands when things go wrong that you don't understand is frankly not necessarily your fault.
当我想到在社会中，即使在这个班级上,有那么多的人,使用计算机时是不舒服的,他们被这种科技吓到了，束手无策,当发生故障时，你也不知道，其实,这也不是你的过错。
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So let me just return once again to the way in which sign systems are intelligible because lots of- there are going to be lots of moments in a course like this in which what we seem to be saying is that, "Oh, we can't know anything," or "We don't know what we know," or "How do we know what we know?"
现在让我们回到,怎样理解符号系统的话题上-,这个学期你们会有很多时候觉得,天哪，我们什么也认识不了“,或者，哎，我们其实并不了解我们以为理解的事“
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