It involves placing a limit on the volume of emissions that can be produced around the country each year, and then auctioning tradable permits to pollute.
这个策略设置了全国每年可排放污染气体的总量限额，然后以拍卖的方式出售排污许可。
Such a charge, whether a tax or a system of tradable permits to pollute, would change energy economics radically.
这笔费用，无论是税费还是一种可交易的污染许可系统，将会从根本上改变能源经济。
Such a charge, whether a tax or a system of tradable permits to pollute, would change energy economics radically.
这笔费用，无论是税费还是一种可交易的污染许可系统，将会从根本上改变能源经济。
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