backswimmer

英['bækswɪmər] 美['bækswɪmər]
  • 松藻虫
  • 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
  • liquor n.酒;烈性酒;液剂
Noun:
  1. predaceous aquatic insect that swims on its back and may inflict painful bites