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  1. sweat blood

    • ph.
      make an extraordinarily strenuous effort to do something
    • 相關詞
    • ph.
      extremely hard work; unstinting effort

    Oxford American Dictionary

    • ph.
      extremely hard work; unstinting effort

    Oxford Dictionary

    • 更多解釋
    • ph.
      make an extraordinarily strenuous effort to do something

    Oxford Dictionary

  2. 知識+