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  1. obligatory

    • IPA[əˈblɪɡət(ə)ri]

    英式

    • adj.
      required by a legal, moral, or other rule; compulsory;(of a ruling) having binding force
    • 釋義

    形容詞

    • 更多解釋
    • IPA[əˈbliɡəˌtôrē]

    美式

    • adj.
      required by a legal, moral, or other rule; compulsory: use of seat belts in cars is now obligatory

    Oxford American Dictionary