Multiple exchange rates refers to a currency with complex exchange rates, different exchange rates used for different international economic activities.

多重汇率是指具有复杂汇率的货币，不同的汇率用于不同的国际经济活动。

He also floated the national currency against the dollar and other global currencies to eliminate multiple exchange rates, but the naira has fallen to historic lows since then, and his policies are drawing strong criticism from Nigerian labor unions.

他还让本国货币兑美元和其他全球货币浮动，以消除多重汇率，但自那以来，奈拉已跌至历史低点，其政策受到尼日利亚工会的强烈批评。