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  1. arcane

    • IPA[ärˈkān]

    美式

    • adj.
      understood by few; mysterious or secret
    • 釋義

    形容詞

    • 1. understood by few; mysterious or secret modern math and its arcane notation
    • 更多解釋
    • IPA[ɑːˈkeɪn]

    英式

    • adj.
      understood by few; mysterious or secret: arcane procedures for electing people

    Oxford Dictionary