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  1. bang one's head against a brick wall

    • ph.
      碰壁;白費力氣;徒勞無功
    • 釋義

    片語

    • 1. 碰壁;白費力氣;徒勞無功 I've been banging my head against a brick wall trying to solve this difficult math problem. Can you help? 我一直想解決這個數學難題但卻徒勞無功。你能幫忙嗎?