基本解释n. 蜉蝣；生命极短暂的东西同根派生 词组短语短语ephemeron table 暂时表Errant Ephemeron 遍历蜉蝣英英字典柯林斯英英字典 something transitory or short-lived 专业释义生物学蜉蝣(ephemeroptera)