The costs of reducing greenhouse gasses that cause global warming was one of the biggest disputes, with China the leading voice of concern about the economic impact of cutting back.

• 最大的分歧之一是减少导致全球变暖的温室气体排放究竟需要付出多大的经济代价。中国对减少温室气体排放带来的经济影响表示最为担心。