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2013-05-23 12:21
求翻译：The U.S generates about four billion tons of solid waste a year.More than 90 percent is composed of agricultural and mining wastes.About 3 percent is from industrial wastes.250 mil?lion tons of garbage comes out from homes,schools,office buildings,stores and hospitals.是什么意思？ 待解决
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The U.S generates about four billion tons of solid waste a year.More than 90 percent is composed of agricultural and mining wastes.About 3 percent is from industrial wastes.250 mil?lion tons of garbage comes out from homes,schools,office buildings,stores and hospitals.
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