n.(用于游泳或潜水的)脚蹼,鸭脚板
adj.[口语]无礼的,轻率的,油腔滑调的( flip的比较级 ),冒失的,鲁莽的
The seal's flipper is homologous with the human arm.
海豹的鳍肢与人类的手臂同源。
It's almost like a flipper action as she kicks down.
她向下踢腿时有鱼鳍的效果.
Flipper? Maybe those frisky crowd - pleasers at the aquarium?
鳍状肢? 或许是水族馆中那些活泼逗人的生物?