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What was neat about it is before that time, the predominant species to use for air conditioning or refrigeration was ammonia.
在这之前是很整洁的，之前最主要的用于空调或者冰箱的,物质是氨。
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Up until then they had been using the old stadium, which now has been turned into a park.
在那之前，他们一直使用旧体育馆；现在旧体育馆已经成为一个公园了。
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Milton surveys the wealth of literary tradition before him, and he resists its allure without the help of any human guide.
弥尔顿在他之前就调查过文学传统的宝藏，他在没有人帮助的情况下抗拒了这一诱惑。
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But before I tell you about lab experiments let me tell you about the most famous field experiment on this idea.
但是，在此之前,让我告诉你们关于这个观点最著名的现场试验。
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As we mentioned in one of the earlier classes, these macronutrients differ in how much energy you can derive from them.
我在之前一节课提过,身体从不同大量营养素中吸收的能量不同
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When you're serious, any way to win will do, but mostly you could make a virtue of a necessity.
一旦你较真,你会为了胜利不择手段,但通常你会在之前进行道德的考虑
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So I would go on in front of audience and before that I would say to myself, "Tal, don't be nervous.
所以我会站在听众面前，在那之前,我会对自己说，“不要紧张。
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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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And to do this we're going to introduce valence bond theory, and the idea of hybridization of orbitals.
在这之前我们要引入价电子成键理论，和杂化轨道的概念。
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Before that the United States went through repeated banking crises when people would start demanding the gold for their notes.
才有了中央银行，在这之前,当人们向银行索要金子来兑现他们的纸币时,美国经历了一次又一次的重蹈覆辙的银行业危机。
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But actually, when you saw that before, you weren't given any proof of that.
但是实际上，在你之前看到这个结果的时候，没有人给你任何证明。
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So, before I get in to that, let me just give you some background.
所以，在那之前，我介绍一下背景。
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Before that, diabetics had been treated with insulin that came from a different source, usually from pigs, so by harvesting and purifying insulin from pig pancreas.
在此之前 糖尿病患者,所用的胰岛素来自于不同的来源,通常是从猪身上提取的,是从猪的胰腺中提取并纯化而成的
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Welles heard that obviously, and he quickly came back. But when she died, he stopped taking lessons, before that, he was adept before he was ten years old.
威尔斯当然听到了，所以他,很快回来了，但在,他母亲去世之后，他就不再上课了，在这之前，在他十岁的时候他就对乐器很熟练了。
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The Russian empire, the state of Muscovy had already expanded greatly, but it's really Peter the Great, it's the big guy who expanded Russia, its territorial size enormously.
沙俄帝国在此之前已有大幅扩张,但是,是彼得大帝,是这个大家伙扩张了俄国领土,他统治下的沙俄幅员辽阔
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The object. Could it exist before but won't exist afterwards.
事物能否在之前存在,却不会在之后存在。
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Trains are fairly new to me because I just got the job and before I got the job,
火车对我来说还比较陌生，因为我刚刚得到这份工作，而在这之前，
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No one, until this time, had suggested that a system would be subjected to quantization except for light.
在他之前，还没有人提出过,除光系统外的量子化系统。
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That has to do with what kind of human-being you want to be before you die.
而与你在死之前到底想做,一个什么样的人有关。
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Isn't this what happens to all of Joseph's brothers who are born before him?
这不正是发生于约瑟夫所有兄长的吗,那些出生在他之前的哥哥们？
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Fate will permit no apocalypse before its time, before the necessary and painful steps that have to lead up to the Last Judgment.
命运在来之前不会允许人们去启示别人，必须要自己去经历必要而又痛苦的那几步,才能走向最终的审判。
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When you understand a sentence I said you have to have the capacity to understand a sentence even if you've never heard it before.
当你在理解我所说的一句话时,你必须要拥有理解这句话的能力,即使你在之前从未听到过这句话
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But it's actually not even quite so easy or so simple as these early scenes that I've just discussed might make out.
都与之密切相关,但在之前。
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A kind of a pin used to hold your cloak together, called a fibula, unknown in the previous period.
一种别住披风的别针,称之为扣针,这在之前的时期从未出现过
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You see this whole realm on life flourishing, on happiness, on well-being has been until recently dominated by the self-health movement.
殷盛人生，快乐，幸福感这一整个领域，在此之前一直被心理自助运动统治。
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It turns out that slightly before the stack, slightly before this conceptual chunk of memory, there's other things called environment variables that we may see over time but elsewhere in memory are other things.
结果是稍微在堆之前，稍微在这个内存块概念之前，另外还一个东西叫做环境变量,我们之后可能看到，内存中的其他地方,是其他的东西。
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The things that make me up existed before, and will continue to exist after my death.
那些构成我的部件在我之前就存在,并且在我死后依然存在
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Before that, he was a child prodigy She was a music teacher, and probably a concert pianist. But I don't think she had a great career.
在这之前，他是一个神童,她是一个音乐教师，也可能,是一个音乐会钢琴家，但我不认为,她有个这么好的职业。
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