但加州法律规定，繁忙的港口计划向某一类船只提供岸边动力。因此它们可以靠接通电源方式取得动力，减少废气的排放。
Under California law, the most visited ports in the state are now working towards providing shore power for certain types of ships so they can plug into an electric power supply and reduce emissions.
噪音和废气排放都符合国家标准所规定的容许值。
The noise and waste gas emission all conform to the permissible data specified in national standard.
那些废气排放超过国家所规定的标准的车辆被禁止使用。
Those whose discharge of waste gas is above the standard set by the State are prohibited.
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