flat·worm /-ˌwɝm/
  扁形蟲
  flat·worm /ˈflætˌwɝm/ 名詞
  扁蟲
  Flat·worm n. Zool. Any worm belonging to the Platyhelminthes; also, sometimes applied to the planarians.
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  flatworm
       n : parasitic or free-living worms having a flattened body [syn:
            platyhelminth]