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You handle them very special in terms of being extra careful in a very high ventilation area, in hoods is how you handle them.
在使用它们的时候你需要格外小心,必须在通风条件非常好的地方，在通风柜中才行。
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This is another fantastic pattern that of course is very useful in a variety of situations.
这是个非常棒的句型，你可以在各种情形下使用它。
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I have constant time access which is great, but I paid a price, which is I had to use up some space.
我的访问时间现在是常数级别，这个非常的棒，但是我也付出了代价，不得不使用更多的空间，在整数的例子中。
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But it's amazing to read the letters and the language of slave traders when they write to each other, the complacency, the mixture of just pure racism on the one hand and just business language on the other.
当你阅读到那些奴隶商们,在往来的书信中所使用的言辞时,会令你非常震惊的,一面是混合在纯粹的种族歧视中的自满,另一面是那种完全商业化的措辞
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For instance, you can see pottery, which used to have this, remember this largely unitary quality.
比如,你可以看到当时使用的陶器,风格非常的单一
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The trouble with the etymology of theory and the way in which the word has been used traditionally is that sometimes it actually means practice, and then at other historical periods it means something very different from practice, something typically from which practice is derived.
理论这个词在词源,和传统的使用方法上的复杂之处在于,它有时候指的是实践，但在特定的历史时期,它指的是和实践非常不同的东西，也就是实践产生的依据。
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The technology that they use and really there's quite a lot of technology here starting from the plates that you grow them in turn out to be engineered so they have the right properties.
这个过程需要使用的技术,确实非常多,从设计培养细胞用的培养皿,到工程化培养出有合适属性的细胞
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But because we're now programming a computer at a lower level and because as we said last week, you really have to be precise and then careful to instruct this machine, this fairly dumb machine that will only do what you tell it to do very specific instructions, do we have to use a more precise syntax than just a puzzle piece might have previously allowed.
但是我们是要在电脑的低平台上编程不是吗？,那我们就要像我上周提到过的那样，一定要小心，小心，再小心地,操纵这台又聋又哑的机器,它只会根据你敲进去的,特定指令来做事，所以我们必须使用非常精细的语法,而不是模模糊糊，让人费解的概念。
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A very simple pattern that you undoubtedly have heard and used many times before.
这是一个非常简单的句型，毫无疑问，你肯定已经听过或使用过很多回了。
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This probably is not because use of eating utensils is human nature, but rather, it's because it's just a very useful thing that cultures discover over and over again.
之所以都用餐具,并不是因为使用餐具是人类本性,而是因为,所有文化都不断发现,餐具非常的实用
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This is another wonderful pattern that you maybe are not now using often.
这个句型你可能之前并不常常使用，但它也是个非常棒的句型。
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Well, we can't guarantee with UV light we'll have enough energy to eject every single electron, so that's why when we use x-rays, they're higher energy, you can pretty much be guaranteed we're going to eject all of those electrons there.
好，我们不能保证紫外光有足够的能量,激发出每一个电子，所以我们要使用，X，射线，它的能量更高，你可以非常确定,我们可以激发出其中所有的电子。
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The "I want to" pattern is a great pattern that you probably have been using and you should use often.
I want to”句型是一个非常棒的句型，你可能之前早已用过，你也可以多多使用这个句型。
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one very natural and very polite way to send an invitation is by using the "I'd like" pattern.
一种非常自然并且礼貌的邀请做法是使用“I'd like”句型。
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You can use the "it sounds like" pattern to very simply condense what he said,
你可以使用“it sounds like”句型，非常简单地概括一下他所说的内容，
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The "Do you mind" pattern is a great thing that you should use often.
Do you mind”句型是个非常棒的句型，记得要多多使用哦。
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And I've got to worry about, is somebody else using ANS, answer, as a variable, in which case I've got to be really careful. Is somebody else using x as a variable? I've got to deal with a lot of those details.
而且我还要担心有没有别人,使用了ANS，answer作为变量,这样我就必须要非常小心,有没有别人用x当做变量呢？,我需要处理很多类似的细节。
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Now, that's a very important point, because why in the world would you give a shield of the kind I am describing, for a man to defend himself, if you imagine him standing by himself anywhere, if you imagine him any distance from the rest of the guys fighting alongside of him.
这点非常关键,那就是到底为什么要将,这样一种盾牌,给士兵们使用,想象一下这个场景,这个士兵在战场的某个角落孤军奋战,与其它友军士兵相隔甚远
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Those nine hours are going to be primarily working on problem sets, and all the problems sets are going to involve programming in Python, which is the language we're going to be using this term Now, one of the things you're going to see is the first problem sets are pretty easy.
这九个小时会是问题,提出的基本锻炼，所有的问题提出,都将涵盖，我们这学期,将使用的Python语言的程序,现在，你们将要看见的,第一个问题的提出非常简单。
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And you'll find in the end that recursion is a feature of a language, it allows you to map some very obvious concepts like the phonebook tearing in half and half and half and half to actual code without it using some arbitrary human contrived framework like a for loop or a while loop which are much more stilted mechanisms.
最后你会发现递归是某种语言的一种特征,你可以用它将一些非常明显的思想,比如将电话簿划分为一半又一半,映射为实际代码，而不必使用那些人为框架,像for循环，while循环之类的,那是很呆板的机制。
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But rather that he is enormously clever, that he can use speech to achieve practical ends just as he uses strength and power, and all those other things.
更是指他非常聪明,他可以用演说来达到实际的目的,就像他使用力量,权力,以及所有其他的品质来达到目的一样
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That is also an advantage of using them as gene therapy vehicles because they will only infect cells that they are - that they have an affinity for or that they're prone to affect.
非常有利于将其,作为基因治疗的载体使用,因为它们只能感染那些--,它们对之具有亲和性,或者说它们倾向于去感染的细胞
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