基本解释鱼鳍式划水(仰卧水面, 两脚并拢, 两手放身旁上下拍水使身体向头的方向移动)同根派生 英汉例句Most fish have fins.大多数鱼有鳞英英字典剑桥英英字典 the practice of cutting off sharks' fins (= the thin vertical parts sticking out from their bodies), and throwing their bodies back in the sea