例子：
The government has pledged to clean up industrial emissions.
政府已保證要清除工業排放物。
Sulfur emissions from steel mills become acid rain.
煉鋼廠排放出的硫形成了酸雨。
Industrialized countries must reduce carbon dioxide emissions.
工業化國家必須減少二氧化碳的排放。
Under the new rules, some factories will cut emissions by as much as 90 percent
按照新規定，一些工廠的減排量要高達90%。
He has to satisfy the environmental lobby that real progress will be made to cut emissions
他必須令環境游說團體相信在減排方面將取得實質性進展。