现阶段使用得最多的燃料材料是乙醇，这种材料可以提炼于甘蔗、甜菜与玉米(美国称为包谷)。
At present, the most widely used substance is ethanol, which can be made from sugar cane, sugar beet and maize (or corn, as it is called in America).
除了提炼玉米淀粉用以制造汽车使用的乙醇外，乙醇精炼厂将作物的剩余部分转为转为酒糟谷。
Besides extracting corn's starch content to be turned into fuel for cars, ethanol refineries convert the rest of the crop into distillers' grains.
第二代生物燃料原料改成采用生物量或者从草中提炼的纤维材料、玉米穗轴和干草、树木或者废弃物来提炼乙醇。
The second generation of biofuels converts biomass or cellulosic material from grass, corn cobs and stover, trees or waste into ethanol.
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