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单词 ostracoderm
释义

ostracoderm

美 
英 
  • 网络甲胄鱼;海滩上捡到甲胄鱼
复数:ostracoderms  
n.
1.
an extinct, jawless, mainly freshwater fish, dating from the Silurian and Devonian periods, that had a flat body encased in a layer of protective bony plates and scales

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更新时间:2025/1/27 18:57:30