Scientists say both studies demonstrate that certain parts of the ecosystem respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.
科学家称这两项研究都表明，生态系统的某些部分对于大气污染的减少反应迅速，但这些发现不应该成为允许污染的理由。
Taking Fen river as a case study, a management information system is set to implement pollution gross control and license management.
以汾河治理为例，建立一个河流水污染物总量控制与排污许可证管理的信息系统。
When a red-alert for air pollution goes into effect, the emergency plan will only allow drivers to use their vehicles every other day on an odd-even license plate system.
概要：《北京市空气重污染应急预案》今天正式发布，市环保局新闻发言人方力表示，空气污染达一级红色预警时，机动车将实行单双号限行。
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