To mitigate environmental problems, in recent decades some countries have developed a variety of market-oriented policy tools, such as environmental taxes, fees, or emission trading.
为了减轻环境问题，在近数十年来，一些国家已经制定了以市场为导向的政策工具，如环境税、费，或排放交易等。
With developing of the research, emission trading did not become a formal environment policy until now.
然而随着研究的不断深入，排污权交易始终没有成为正式的环境政策。
The paper focuses on the impact of emission permits and trading on the production policy for emission-dependent firms.
本文旨在研究排放许可与交易机制对排放依赖性企业生产策略的影响。
The paper focuses on the impact of emission permits and trading on the production policy for emission-dependent firms.
本文旨在研究排放许可与交易机制对排放依赖性企业生产策略的影响。
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