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1. Dr.eye 譯典通

   bang one's head against a brick wall

   • ph.
     碰壁；白費力氣；徒勞無功
2. • 釋義

   ph.

   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？