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But there is a snag. Experts warn that biofuels are very expensive to produce—roughly twice as costly as gasoline—and can only become viable with generous government subsidies.
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不过存在一个障碍。专家警告说，生物燃料的生产成本非常高—大约是汽油的两倍，除非政府提供慷慨的补贴，否则缺乏可行性。 |
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But there is a sophisticated global network to try to stop such a pandemic in its tracks.
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不过各国组织了一个相当完善的合作网，旨在阻止流感的不断扩散。 |
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But there is a specter haunting immigration: Can the U.S. economy really provide decent wages for the 46 million workers expected in the next 50 years?
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但是美国这麽依赖移民也有隐忧：在未来半个世纪内，预计会有4600万移民进入美国，美国经济真的能提供他们像样的工资吗？ |
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But there is a strong sensation when things end; it is a feeling of finality and accomplishment.
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但是，当某件事情结束时，有一种强烈的感觉-圆满结局和成就感。 |
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But there is a third deficit, which may prove much more troubling.
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然而，美国还存在着或许更令人头痛的第三个赤字。 |
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But there is a vast meadow of life in the middle, where the bad and the good flip-flop acrobatically. This is what convinces me to believe in the 50-percent theory.
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但在它们发生期间有一片宽广的草坪，在那儿上演的各种好事坏事像耍杂技一样地翻新。这就是让我信服对半理论的原因。 |
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But there is a worse place.
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但是那里有个更恶劣之处。 |
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But there is also a race of creatures, creatures who have no love for Voldemort (CS2), and one of whom has a huge amount of respect and admiration for Harry, who are powerfully magical in their own right, and could play a major role in the final book: the
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还有一个生物种族，他们对于伏地魔毫无感情可言（CS2），而对于哈利则充满了尊敬与崇拜；他们具有本身强大的魔法，可能会在最后一部书中起到重大作用；他们就是：家养小精灵。 |
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But there is also a temptation to renege to gain sales, much as one prisoner might end up ratting on another.
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但违背约定，降低价格来赢得销售也很诱人，正如其中一个囚徒会出卖同伴，先说出供词。 |
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But there is also the adrenalin generated by big events, and the accompanying guilt at finding any thing so awful exciting.
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但也因为发生了重大事件，会让人激动不已，随即又为之感到内疚，觉得不该为这种可怕的事情感到激动。 |
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But there is also trepidation.
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但也存在担忧。 |
