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  1. Oxford American Dictionary

    quantum leap

    • IPA[ˌkwän(t)əm ˈlēp]

    美式

    • n.
      a huge, often sudden, increase or advance in something

    • noun: quantum leap, plural noun: quantum leaps

    • 釋義

    名詞

    • 1. a huge, often sudden, increase or advance in something there has been a quantum leap in the quality of wines marketed in the UK