Another method is the emissions trading system.

另一种方法是排污权交易制度。

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Many of the current focus are clustered in the emissions trading system, while ignoring the main body of emission rights on the protection of the rights.

目前的许多关注焦点都聚集在排污权交易制度上，而忽略了对排污权主体的权利保护的研究。

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Delegates from nearly 200 nations gather in the Danish capital Copenhagen in December to try to agree on the shape of a post-2012 emissions trading system.

今年12月大约200多个国家的代表将齐聚丹麦首都哥本哈根，讨论2012年以后的减排交易体制。

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most sweeping emissions trading system companies would have to buy permits for every ton of carbon they emit, a system designed to provide financial incentives for those that reduce their pollution.

VOA: standard.2009.05.03

Critics of the EU's Emissions Trading System also argue that the European Union issued too many permits in the first place.

BBC: Chimneys at coal-fired power station

It promoted the use of the European Emissions Trading System, where revenues from carbon trading are automatically reinvested into more efficient and cleaner technologies.

BBC: MEPs call for investment in low-carbon technology.

Hence, if competitive distortions can be avoided, we support airlines' inclusion in the EU Emissions Trading System as the first step towards a global cap-and-trade framework.

ECONOMIST: Letters