verb · to drift about or move unsteadily

几片落叶在水面上静静地浮动。

verb · (of a currency or exchange rate) to move according to market forces

该国目前实行的是浮动汇率制度。

verb · to rise and fall; to be unstable or changeable

由于供需关系的变化，市场价格在一定范围内浮动。