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And last June,says Sittenfeld, the House passed the American Clean Energy and Security Act, the first bill out of either chamber of Congress to directly take on the challenge of global warming.
VOA: standard.2010.02.25
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Both of them are self-contained courses, so you could take either 251 or 252, or you could take both.
两门课都自成一体,你可以在251号和252号中任选一个,或者都选也行
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But the Greek tragic view does not take either of these routes, which I regard as a relatively easy escape from the problem compared to the way the Greeks got stuck.
但希腊的悲剧意识对这两种套路都不接受,在我看,相对而言,与其困扰于此,古希腊人更愿意逃避这个问题
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I start off, either I take this path and carry on, or I take that path and carry on, but each box, if you like, gets touched exactly once.
程序开始后，或者采取这条路径然后继续，或者采取那条路径然后继续，但是每个图形，如果你喜欢这么说的话。
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Another side effect if you take too much lithium is death, so that's no good to have in sodas either, and it might not have been as big a deal back in the 1920's, but you can imagine with supersizing today, this might be a bigger problem.
另一个副作用是因为摄入锂过量而死，这更说明在汽水里放这种东西是不好的，这在二十世纪二十年代可能没什么大问题，但你可以想象在如今这个什么都超标的时代，这也许会出更大的问题。
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It's just how much heat is involved when we change the temperature. Now, the products have some heat capacity associated with them right, it takes a certain amount of heat if we make their temperature change, to either put it in or take it away, depending on which direction the temperature is changing.
问题就是当我们改变温度时,有多少热量发生了转移,生成物具有一定的热容,如果我们改变,它们的温度，就要输入或,提取一定的热量,这取决于温度改变的方向。
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If it's at that point, I'm done, if not, if it's greater than the value I'm looking for, I either take one half or the other.
那么我就取左边，否则的话就取右边，好，你们可以明白，我们一次就可以缩小问题规模的一半了吧。
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In either case, I take that value and multiply back by two, if it was even I get back the original number, if it was odd, I'm not going to get back the original number, so I can just check to see if they're the same.
在两种情况中，我都把结果值,再乘以2，如果x是偶数我就,得到了原来的值，如果x是奇数那么就不会得到,原来的值，因此我看看得到的值,和原来的值相等不相等就可以了。
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