back swimmer

英 美
  • 仰泳蝽
  • back n.后面;背脊;靠背;后背;后卫vt.支持;后退adv.向后地adj.向后的;后面的;偏远的;过时的;积欠的
  • swimmer n.游泳者
名词 backswimmer:
  1. predaceous aquatic insect that swims on its back and may inflict painful bites