欧盟致力于减少二氧化碳排放量到2020年至少减少20%，到2050年减少80%，并希望所有国家都同意在哥本哈根设定的严格的新目标。
The EU is committed to cutting carbon emissions by at least 20% by the year 2020 and 80% by 2050 and wants all nations to agree tough new targets at Copenhagen.
大部分的辩论都集中在两个中心问题(障碍)上：像欧盟和美国这样的富裕发达国家，在致力于减少污染物排放上要付多少钱？
Much of the debate falls on two central questions (hurdles) : How much money should rich developed countries like those in the EU and the U.S. contribute to help pay for reduced emissions?
哥本哈根谈判不仅仅要关注于减少碳排放，而且要帮助国家适应这种气候变化。
The negotiation in Copenhagen needs to concentrate not only on mitigation of emissions, but also on helping countries adapt to climate change.
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