n.(非鱼类海生动物的）鳍状肢；(用于游泳或潜水的)橡胶蹼
名词flipper的复数形式.
It had 4 flippers that looked like paddles. 它的四个鳍状肢看起来就像划桨一样。
A bizarre creature whose body was dwarfed by its long, thin neck and tail, Elasmosaurus swam using four flippers. 薄片龙是一种样子古怪的蛇颈龙，活像长着超长脖子的侏儒一般，靠四个鳍状肢游动。
