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operculum英英字典_operculum剑桥英语解释_operculum柯林斯英文解释_甲百匯小鸡词典
甲百匯小鸡词典

operculum

O 开头单词

柯林斯词典

    operculum /əʊˈpɜːkjʊləm/

  • 1. N the hard bony flap covering the gill slits in fishes 鰓蓋

  • 2. N the bony plate in certain gastropods covering the opening of the shell when the body is withdrawn 蘚蓋

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