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  1. orcein

    • IPA[ˈôrsēən]

    美式

    • n.
      a red dye obtained from orchil, used as a stain in microscopic study.
    • noun: orcein

    • 更多解釋
    • IPA[ˈɔːsiːɪn]

    英式

    • n.
      a red dye obtained from orchil, used as a microscopic stain.

    Oxford Dictionary