cap and trade

The European Union's cap and trade system puts a price on carbon emissions from major industries.欧盟的总量控制与交易系统为主要行业的碳排放设定了价格。

Critics argue that cap and trade schemes can be undermined if the emissions cap is set too loosely.批评者认为，如果排放总量上限设定得过于宽松，总量控制与交易计划就会被削弱。