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  1. Oxford American Dictionary

    heretofore

    • IPA[ˌhirdəˈfôr]

    美式

    • adv.
      before now
    • 釋義

    副詞

    • 1. formal before now diseases that heretofore were usually confined to rural areas
    • 更多解釋

    heretofore

    • IPA[hɪətʊˈfɔː]

    英式

    • adv.
      before now: diseases that heretofore were usually confined to rural areas

    Oxford Dictionary