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  1. the bottom falls out

    • ph.
      used to refer to the sudden collapse or failure of something
    • 相關詞
    • ph.
      cause (something) to collapse or fail suddenly

    Oxford Dictionary

    • ph.
      used to refer to the sudden collapse or failure of something

    Oxford Dictionary

    • ph.
      collapse or failure occurs

    Oxford American Dictionary

    • 更多解釋
    • ph.
      used to refer to the sudden collapse or failure of something

    Oxford American Dictionary