pelvic fins

英 美
  • n.腹鳍
  • fins n.鳍;鱼翅;鳍状物;散热片;五元纸币
  • pelvic adj.骨盘的
名词 pelvic fin:
  1. either of a pair of fins attached to the pelvic girdle in fishes that help control the direction of movement; correspond to hind limbs of a land vertebrate