第1个回答 2017-03-29
will stand up against all odds
热能与动力工程专业英语第三版李瑞扬5.6 6.3 7.10 三篇的翻译
Motor vehicles are not the only air polluters. Coal and oil, used to heat homes and factories and to generate electricity, contain small amounts of sulfur. When the fuels are burned, sulfur dioxide, a poisonous gas, is produced. It is irritating to the lungs. Some cities have...
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