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单词 flatworm
释义

WordReference Random House Unabridged Dictionary of American English © 2024
flat•worm  (flatwûrm′),USA pronunciation n. 
  1. Invertebratesany worm of the phylum Platyhelminthes, having bilateral symmetry and a soft, solid, usually flattened body, including the planarians, tapeworms, and trematodes;
    platyhelminth.
  • flat1 + worm 1895–1900

Collins Concise English Dictionary © HarperCollins Publishers::
flatworm /ˈflætˌwɜːm/ n
  1. any parasitic or free-living invertebrate of the phylum Platyhelminthes, including planarians, flukes, and tapeworms, having a flattened body with no circulatory system and only one opening to the intestine
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