Under the Kyoto climate treaty that went into force last February,35 industrialized nations committed themselves to reducing or limiting output of six gases, chiefly carbon dioxide, a byproduct of burning coal and oil products.

• 根据去年2月开始生效的《京都议定书》，35个发达工业国家承诺减少或限制6种温室气体的排放，其中主要为二氧化碳。