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The efficiency rate last year was the equivalent of cutting 480,000 metric tons of carbon dioxide, or C02, plus 3,600 tons of sulfur dioxide, or S02, and 28,500 tons of dust, the company said. 这家公司说，去年的发电效率相当于削减了48万吨二氧化碳，3,600吨二氧化硫，以及28,500吨粉尘。 - 2
Because of that and other changes, Beijing’s sulfur emissions have been cut almost in half compared with 2000, and industrial dust has decreased by two-thirds. 基于各种努力，与2000年相比，北京市空气中的硫化物含量减少了近一半，工业烟尘排放量则减少了三份之二。 - 3
The main pollutants of coal-firing boilers include dust, sulfur oxide, nitrogen oxide and carbon dioxide. 燃煤锅炉的主要污染物包括粉尘、硫氧化物、氮氧化物和二氧化碳。
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