And in macroscopic view, it also helps reduce the whole cost for environmental control and optimal allocation of resources in the whole society.

宏观上，排污权的交易有利于降低整个社会控制环境总成本和实现资源优化配置。

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Control efforts are ongoing with special emphasis on environmental management for the two most affected towns, Conakry and Kindia.

控制努力仍在持续，特别重点为受影响最严重的两个城镇科纳克里和金迪亚的环境管理。

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Environmental Defense, which launched the anti-DDT campaign in the 1960s, now endorses the indoor use of DDT for malaria control, as does the Sierra Club and the Endangered Wildlife Trust.

在1960年代发起反对滴滴涕运动的环境防护组织现已认可室内使用滴滴涕控制疟疾，塞拉俱乐部和濒危野生动植物信托基金也表示了支持。

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"We called in all the available resources, " said Dr. John Simkovich, director of public health for the South Carolina Department of Health and Environmental Control.

CNN: Right city, wrong state

Overall responsibility for the design and implementation of the study was given to the National Institute of Child Health and Development, with input from a number of advisory and oversight committees, the Director of the NIH, and with the involvement of other government agencies (the Department of Health and Human Services, the Centers for Disease Control and Prevention, and the Environmental Protection Agency).

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Two years later, they founded Yantai Jereh, which grew into a major supplier of oilfield equipment and services for oil and gas drilling, natural gas liquefaction and environmental control.

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