求翻译：而实施排污权交易,在排污许可证数量不变时,新的厂商只需保证较低的边际治理成本,购买少量的排污权就可以实现生产规模达到合理的盈利水平。是什么意思？

Implementation of emissions trading, the same number of emission permits, manufacturers only guarantee a lower marginal treatment costs and the purchase of a small amount of emission rights can be achieved the scale of production to achieve a reasonable level of profitability.

The implementation of emissions trading, the sewage license number does not change, the new vendor to ensure that only the lower marginal treatment costs, buy a small amount of emissions can be achieved on the scale to achieve a reasonable level of profitability.

But implements the pollution discharge power transaction, when pollution discharge permit quantity invariable, the new manufacturer only must guarantee the low boundary government cost, purchases the few pollution discharge power to be possible to realize the scale of production to achieve the reaso

The implementation of emissions trading, at the time of discharge permit does not change the number, new manufacturers only guarantee a lower marginal costs, purchase a small amount of emissions production scale reach can be achieved reasonable profitability levels.

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