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  1. fall flat

    • ph.
      fail completely to produce the intended or expected effect
    • 相關詞
    • ph.
      fall over forward

    Oxford American Dictionary

    • ph.
      fail in an embarrassingly obvious way

    Oxford Dictionary

    • 更多解釋
    • ph.
      fail completely to produce the intended or expected effect

    Oxford American Dictionary

  2. 知識+