基本解释（美）辅币同根派生 英汉例句双语例句Dimes and pennies are fractional currency.一角银币和分币都是辅币。词组短语短语bit change fractional currency 辅币英英字典柯林斯英英字典 paper or metal money of smaller denomination than the standard monetary unit 专业释义经济学辅币