The pretreatment of lignocellulose is a critical step in the production of fuel ethanol by lignocellulosic materials.

纤维质物料的预处理是木质纤维素原料生产燃料乙醇的关键步骤。

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It's also true that agricultural raw materials, especially cotton, compete for land and other resources with food crops - as does the subsidized production of ethanol, which consumes a lot of corn.

另一个事实是以棉花为代表的农业原材料与其他粮食作物竞争耕地面积及其他资源——与此同时作为乙醇的加工原料，玉米也遭到了巨额的消耗。

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