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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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if we can't think what system it belongs to, that's tantamount to saying we really don't know what it is.
我们就不知道它从属于哪个符号系统，我们就不能认识它了。
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So we know what that number would be, it would be negative 424 kilojoules per mole that we see here.
我们知道它的值是多少，它就是我们在这见到过的负，424，千焦每摩尔。
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This quantity is exactly zero for an ideal gas and we'll discover why eventually it has to do with what we mean by an ideal gas it turns out.
对理想气体它是零,这点我们接下来会知道是,为什么，这与为什么我们叫它理想气体有关。
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Since what we want to know is whether the soul is immortal, how do we know it can't break.
既然我们想知道,灵魂是否不朽，我们怎么知道它会不会破裂呢。
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I have no idea where that is other than to know that it's up so let's just go ahead and assume that everything over here is the heap so what has just happened?
我不知道它在哪里，只知道它在上面,我们假设这里所有的东西是堆,那么会发生什么呢？
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The humans will become like gods, knowing good and evil, ; Not because of some magical property in this fruit; And it's not an apple, by the way, Do we know what the fruit is?
人类能像上帝一样，分辨善恶，不是因为这果实有魔力;,顺便提说一下，它并不是苹果，我们知道那个果实是什么吗？
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We have carbon 12. I will even leave off the 6 because we already know it is carbon.
我们有碳12，我们将6省去6,因为我们已经知道它是碳了。
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If you assume that, you are not playing by the rule, we don't know what force it exerts.
如果你假定了,那你就犯规了,我们不知道它施加了多大的力
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As early as 1803, we know he's working on-- Trying to get this to work just right.
早在一八零三年,我们就知道他开始,努力去使它恰如其分
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And in fact we know if the price goes to 0, it's delisted from the exchange.
实际上我们知道如果价格是，它就会从交易中退出。
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Often,we just don't know how it got it, and it just happened because somebody just said, "It's authoritative. It must've been written by an apostle."
我们通常都不知道它是如何来的，它已经成了事实，因为有人说，“它具有权威，肯定是由一位使徒所写“
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So I by that indicator we are in a recession and we don't know that it's over yet; it's been falling.
所以我，通过那个指数，我们正处于经济衰退时期,并且我们不知道它是否结束；它一直在下降。
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Now, if that was all we had to say about disgust, it wouldn't affect morality very much but we know that people can be seen as disgusting.
如果我们只停留在情绪层面来讨论反感，那么它跟道德就没多大关系,但我们知道，我们可以把人看成令人反感的。
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to the process whereby the heavenly angels not only eat food but they also digest it; and Milton lets us know, whether we want to know or not, how those angels actually excrete the food they have taken in.
去描述天堂的天使不只吃食物而且要消化它的过程,弥尔顿让我们知道，不管我们想不想，这些天使怎样排泄出他们吃的食物。
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Katie, how do we know this is not an equilibrium?
卡蒂 我们怎么知道它不是一个均衡呢
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We know that two vehicles are going to come along and not help Tony and that the third vehicle will, because everything, as I say, happens in threes in folklore.
我们知道有两辆车会过来,而且它不会帮助托尼，那么第三辆就一定会，因为，我说过，在民间传说中什么都只发生三次。
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So, we're talking about wave functions and we know that means orbitals, but this is -- probably the better way to think about is the physical interpretation of the wave function.
我们讨论波函数而且,我们知道它代表着轨道，但-也许更好的思考方法是,考虑波函数的物理意义。
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These are actually all examples that we'll talk about in freshman chemistry at some point, as an example of a connection between a chemical principle we learn, and what we can know about how it functions.
作为联系一个我们,所学的化学原理,和我们能知道它，如何工作的例子。
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I have no idea what's here at the moment so I'm just going to draw a question mark because that memory might have been used previously for some other purpose, but we know it's currently available to us so we have four bytes of memory.
我不知道在此刻这里是什么,所以我画一个问号，因为那块内存可能在之前,为其它的目的而使用过，但是我们知道它可以为我们所使用,这样我们就有4个字节的内存。
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while plainly we can understand it simply to mean preconception which is inescapable nevertheless can still be bad.
尽管我们知道它的意思是,不可避免的先入为主的看法,可能是不好的。
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We know it has to big anyway, since we can extract heat from it without changing the temperature.
我们知道它必须很大，因为我们得从中提取热量,但不改变它的温度。
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So we know that it's 1, because we have 1, 2, 3, 4 bonding, minus 2 anti-bonding, and 1/2 of that is a bond order of 1.
我们知道它是，因为我们有1，2，3，4个成键，减去2个反键，它的一半就是键序为1。
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So carbon 12. We know that it has the proton number, by definition, is 6. And the neutron number, 6 from 12 is 6. So it has 6 protons and 6 neutrons.
所以碳12，我们知道它有质子数，根据定义，那就是6，而电子数，12减6等于6，所以它有6个中子。
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But, we know for example that magnesium, when it reacts, it reacts with both of its electrons, not just one of its electrons.
但是我们知道，拿镁来说，当它发生反应的时候，并不只是，某一个电子反应，而是两个价电子都发生反应。
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It's a state function. If we know the enthalpy of the products minus the enthalpy of the reactants, right. It's a state function.
如果我们知道生成物的焓减,去反应物的焓的值,它是个态函数，原则上我们可以做到。
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We want to know how much force it exerts when I pull it by a certain amount.
我们想知道当我们将弹簧拉伸一定量时,它能产生多大的力
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No, I don't think we really know but it's definitely not an apple.
不，我认为我们并不知道，但它绝不是苹果。
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In Judges 1:8 and 21, we read that the people of Judah did this and that despite that victory they failed to actually drive out the inhabitants, the Jebusites, who lived there.
士师记》第1章8和21节，我们知道犹大人这样做,它描述了这一胜利,他们实际上并没有将那些居民驱逐出去，耶布斯人，他们住在那里。
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How do we know it when we see it?
我们如何知道它是文学？
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