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And in terms of thinking about it for organic chemistry or if you're interested in thinking about the mechanism maybe by which it is toxic, a first step would be to draw its Lewis structure.
而为了在有机化学中思考它,或者如果你对它,有毒的机理感兴趣的话，第一步要做的应该就是画出它的路易斯结构。
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So the first step to doing that is I want to just generalize our results so far for a Carnot cycle.
第一步,首先来推广一下,卡诺循环的结果。
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So in terms of the first step of skeletal structure, this is actually going to be easier because we don't have a central atom, we just have carbon and nitrogen here.
对于第一步画出骨架，其实比刚才更容易,因为我们没有一个中心原子，我们这里只有碳和氮两个原子。
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The first step in the process is when I was Deputy WHCF, that I put on the wall a big white board calendar.
程序的第一步是,当我还是办公室副主任，我在墙上安了个,白色的日历板。
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And this is the first descriptive step to developing a theory of laughter.
这是第一个描述性的步骤,来建立笑的理论。
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Then the first time so he came up a major third there and then quickly backed off with just a half step below it, which completely gave it a different feel.
于是开始的时候,乐曲中出现一个大三和弦,然后快速地降低了半个音,这种变化给人完全不同的感受
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I think that's a good first step.
你说的我觉得是个好的开端
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Now you start a process, a cyclic process, where the first step in the process is denaturing the DNA.
然后你就可以开始一个循环步骤,第一步是使DNA变性
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Some of these questions that look very straightforward just naming the geometry, you have to remember to do the first step before you jump in and go ahead with a naming.
有些题目是十分直接的,仅仅是说出几何形状，你们要记住在说出它的形状之前,还有一步工作要做。
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This was done by Shimomura that was kind of the first step in this process of having it become such a useful tool.
这个工作是由Shimomura完成的,这是它成为一个有用的,工具的过程中的第一步。
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The first step is we had to be able to take this circular DNA and cut it to create a site for our new gene to be added.
第一步是切割环形DNA,以创造出一个整合新基因的位点
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Well the first step would be to cut open the plasmid with a particular restriction enzyme, and then what if I take that same restriction enzyme and I cut up the DNA that I'm interested in.
第一步是用某种限制性内切酶把质粒切开,然后用同一种限制性内切酶,切出我想要的DNA
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