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2013-05-23 12:21
求翻译：Materials in electric car batteries are hard to produce, which adds to the energy it takes to make them. In fact, the health and environmental costs of making electric cars can be 20 percent greater than conventional cars, and manufacturing efficiencies will have to be achieved in order for the cars to become greener, 是什么意思？ 待解决
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Materials in electric car batteries are hard to produce, which adds to the energy it takes to make them. In fact, the health and environmental costs of making electric cars can be 20 percent greater than conventional cars, and manufacturing efficiencies will have to be achieved in order for the cars to become greener,
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