气候变化委员会必须在2011年末抉择出温室气体排放量定价的最佳方式，是继续遵守欧盟温室气体排放交易体系（ETS），还是实行碳税，亦或两者混合采用。
The climate committee must decide by late 2011 the best way to put a price on greenhouse-gas emissions: an ETS, a carbon tax or a hybrid of both.
问：中方对欧盟将航空纳入碳排放交易体系持何立场？
Q: What is China's position on the EU incorporating aviation emissions into the carbon trading scheme?
问：中方对欧盟将航空纳入碳排放交易体系持何立场？
Q: What is China's position on the EU incorporating aviation emissions into the carbon trading scheme?
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