《蒙特利尔协定书》1987年生效，起初预计在12年内削减一半[氟氯碳]气体。
Montreal, implemented in 1987, was originally expected to cut half of its gases in 12 years.
根据2007年的一份研究，《蒙特利尔协定书》阻止了相当于1890亿吨CO2气体量的排放。
According to a study in 2007, the Montreal protocol prevented the emission of 189 billion tonnes of CO2 equivalent.
美国、墨西哥、加拿大与其他一连串国家，已表示支持根据《蒙特利尔协定书》来处理氢氟碳化合物的想法。
America, Mexico, Canada and a bunch of other countries have indicated that they support the idea of dealing with HFCs under the Montreal protocol.
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