例子：
The government has pledged to clean up industrial emissions.
政府已保证要清除工业排放物。
Sulfur emissions from steel mills become acid rain.
炼钢厂排放出的硫形成了酸雨。
Industrialized countries must reduce carbon dioxide emissions.
工业化国家必须减少二氧化碳的.排放。
Under the new rules, some factories will cut emissions by as much as 90 percent
按照新规定，一些工厂的减排量要高达90%。
He has to satisfy the environmental lobby that real progress will be made to cut emissions
他必须令环境游说团体相信在减排方面将取得实质性进展。
