另一项不为人知，却可能是麻烦最大的隐忧，正是乙醇生产中的大量用水。
But one of the least-known but biggest worries is ethanol's extravagant use of water.
在生产、生活中，哪些地方利用水的浮力？
人们使用水稻的每一部分，人们用水稻生产动物性食品和米油。
People use every part of the rice plant. They make animal food and rice oil from it.
人们使用水稻的每一部分，人们用水稻生产动物性食品和米油。
People use every part of the rice plant. They make animal food and rice oil from it.
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