Today, nearly all hydrogen for cars comes from fossil fuels and solar.
现在几乎所有氢燃料汽车使用的氢都来源于化石燃料.
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The burning of solid waste, fossil fuels, and wood products are major causes.
固体废物的, 燃烧化石燃料和木材产品的重要原因.
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However , sources and environment limit conventional hydrogen production by fossil fuel.
常规化石燃料制氢受到资源、环境多方面的制约.
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随着世界范围内化石能源的日益短缺,寻找新型替代能源显得尤为迫切.
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By comparison, a typical fossil fuel generator has an efficiency of about 28 %.
与之相比, 一个典型的化石能源发电器的效率在28%左右.
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Do you people still use fossil fuel, or have you discovered crystallic fusion?
你们现在是用化石燃料还是结晶体熔解物?
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If nuclear power superseded fossil power, we would run out of uranium in 4 years.
如果我们以核能取代所有化石能源, 铀将在4年内耗尽.
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But he cannot see how he could run his farm without cheap fossil fuels.
但是莱特先生无法想象没有了便宜的化石燃料还怎么经营自己农场.
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The answers may lie in a close reexamination of the fossil evidence.
通过对化石证据的仔细反复的研究是可以得出答案的.
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Relics of the flora and fauna of the Pleistocene age have been preserved in fossil form.
更新时期的动植物遗迹以化石的形式保存了下来.
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Such enthusiasm reflects the hope that nuclear power can wean America off imported fossil fuels.
政府的热心反映出美国希望利用核电以戒除进口化石燃料.
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