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So when I expand this gas adiabatically and it cools down, why do you think it might cool down?
现在我们知道了气体绝热膨胀时,温度会下载，为什么会降温？
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But it was there for over a thousand years, and we now know things to be a little different.
但是，它存在了超过1000年，我们现在知道的事情有点不一样。
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So, this means we have the general trends down, so we should be able to look at actual atoms in our periodic table and graph them and see that they match up with our trends.
那么，这表示我们已经知道了大体的规律，现在我们可以来看看周期表中的,原子的实际情况，并把它们画出来,看看是否与我们的规律相符。
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Mr. Carl Icahn: Alright, you have patience now it's a year later and we'll see what happens now.
伊坎先生：嗯，你得有耐心,那件事情发生了一年了，我们都知道现在的情况。
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Now we know that Milton was blind probably well before the time he began writing Paradise Lost, and therefore, of course, he was then unable to read.
现在我们知道弥尔顿很可能失明了,这早于他开始写《失乐园》的时间，因此，他不能通过眼睛阅读。
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So we know how prices are set, they're set by the firms, so the next question is where do the quantities come from?
现在我们知道了价格是怎么决定的,它们是由公司决定的,下一个问题是产量怎样得到
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I think the objective ,yeah and that will help define what we should be doing.
我觉得目标是，有了目标就可以知道我们现在该干什么。
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Since then, since we know about atoms and molecules now, we can rationalize the concepts of thermodynamics using microscopic properties, 62 and if you are going to take 5.62, that's what you'd learn about.
既然我们现在已经知道了原子和分子,的概念），我们可以用,微观属性,来阐释热力学中的概念，如果你会选修5。,-那是你将要学到的。
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Its composition is influenced and determined by literary conventions and goals. Now, of course we all know that there is no such thing as purely objective history anyway. We have no direct access to past events.
它的形成是受文学的惯例和目的影响和决定的,当然现在我们都知道了没有什么是纯客观的历史,我们没有直接通向过去事件的途径。
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Now, we know how the numbers come in.
现在我们知道这些数字是如何得到的了
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Now, we mentioned how important the poems are.
现在,我们知道了诗歌的重要性
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It's too early to tell what the impact on learning will be from open course ware but we know from messages people have sent us that educators see tremendous value in being able to use the site to build work upon others.
现在还不好说,但是通过人们发来的邮件我们知道了,教育者对于能够在别人的基础上,展开自己的工作给予很高赞扬,他们现在可以节约下时间。
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Now we've known that.
现在我们都知道这个道理了。
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There are services now, we don't know yet how to get those stem cells out of cord blood and how to use them for therapies, but it's reasonable to think that we might know about this in 30 years.
现在已经有提供这样的服务了,我们现在还不知道如何从脐带血中,提取这些干细胞并用于治疗,但有理由相信,在未来的30年内我们会知道的
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They are char *s because we now know what that means.
他们是char，*s，因为我们现在知道那是什么意思了。
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Today we know, for example, if you can put one certain kind of element in your mouth or eat that, it doesn't necessarily mean you want to put the element next to it and your mouth as well, that might not be safe.
现在我们知道了，比如，即使你能把某一种元素放进嘴里,或者吃下去，这也并不一定意味着,你会把它邻近的元素也吃进嘴里,这可能会有危险，但。
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So basically, at the time he was just going on size and then traits, but what we actually know today is that we can also order things in the periodic table by electron configuration.
基本上，在当时他只能通过大小,和特性来进行，但是现在我们已经知道了,我们还可以通过电子排布来对它们进行排序。
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I don't know how much you read about the-- right now we are going through a major financial crisis, which started in the U.S.
我并不知道你读了多少...,现在我们正在经历一个严重的金融危机,它起始于美国
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Now we all know what Virgil's poetic career would go on to look like.
现在我们都知道维吉尔的诗歌职业是如何发展的了。
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So, what happens now that we, in fact, know that matter is a wave?
所以，我们现在，确实知道了物质是波？
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Alright. So, since we have these terms defined, we know the frequency and the wavelength, it turns out we can also think about the speed of the wave, and specifically of a light wave, and speed and is just equal to the distance that's traveled divided by the time the elapsed.
好了，我们已经定义了，这些术语，我们知道了，频率和波长，现在可以来考虑,波的速度了，特别是光波的速度，速度等于它走过的距离,除以所用的时间，因为我们。
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We now know what happened because of the surveillance investigation.
我们现在知道发生了些什么,经过监督调查后
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I think we know now what they mean.
我们现在应该知道它们的含义了
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Now we've figured that out, we figured out who the winner is, and I know that all of you have been trying to see if you won, I'm going to leave you in suspense.
现在我们来已经知道谁是赢家了,我知道你们都想知道自己是不是赢家,我留下个悬念
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Now we have the trappings here of epic grandeur and epic subject matter.
现在我们知道了史诗的雄壮还有主题很重要。
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So we already know that. So now we can write CpdT or differential dH as Cp dT plus dH/dp, pdp constant temperature, dp.
我们已经知道了这个，所以我们现在,可以写出H的微分式：dH等于，加上恒温时的偏H偏。
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psi So we're going to for psi, and before that, we're going to figure out that instead of n just that one quantum number n, we're going to have a few other quantum numbers that fall out of solving the Schrodinger equation for what psi is.
我们要讲到，但在这之前，我们已经知道了,主量子数，现在我们需要知道，其他一些,解psi的薛定谔方程,所需要的量子数。
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All right, what we've already got that q is zero.
好，现在我们已经知道了q是零。
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The period, that's right. So, it's going to take one period to move that long. And another way 1 we can say period is just 1 over nu or 1 over the frequency So, now we know both the distance traveled and the time the elapsed.
还是？周期，对的,它需要一个周期的时间,另一种说法是周期是,除以nu，也就是1除以频率,现在我们同时知道了。
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