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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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And right now, you know, we are working on a paper together which is helping me out a lot.
现在我们正一起写一篇论文，他的参与真的给我带来了很大帮助。
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And he actually did this in the late 1800's, back before even all of the elements that we know today were discovered, really only about 60% or so, 70% were discovered then that we now know today.
他最终在十九世纪晚期完成了这一壮举，难能可贵的是,虽然我们现在已经发现了所有的元素，但在当时已知的元素只有我们现在知道,百分之六七十，在这种情况下。
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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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We now know what the scientific basis of that is, it involves activation of our immune system.
我们都知道这样做的科学依据,这牵涉到激活你的免疫系统
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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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0% of the websites that may change, two years now, into mostly mandarin or some other language. We don't know.
也许，两年后80%的网站，会变成其他语言,可能是普通话，或者其他语言，我们无法预测。
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Now we're going to see a bunch of examples and I know those are words, let me give you an example.
让我们来看看例子吧,我知道那只是概念，来看个例子。
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OK, so now the question is, how do we know the first place that this is a suitable reductant?
好的，现在的问题是，我们如何能知道第一步中,镁是一个合适的还原剂？
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So, in this definition now, we have one term which we know.
好，在这个定义中，这一项我们已经知道了。
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Now in music as you probably know-- we've already talked a little bit about this-- we have the importance of the beat.
你们也许知道在音乐中节拍很重要,我们已经讨论过一些,节拍的问题
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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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That's not the end of the story. The question really is, so now we know that, what kind of relations did they have?
这不是重点,真正的问题是,它们之间的关系到底是什么
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Now, at this point we'd want to know more about the underlying mechanics about what's gone on in the case of the coma.
这时候我们就会想知道更多,昏迷状况下所发生的,更深层次的机制。
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And languages that we know now as creoles, the word refers back to their history.
而这些叫做克利奥尔语的语言,再次说明了它们的历史
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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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