beat one's head against a wall

beat one's head against a wall beat one's head against the wall 请问是beat one's head 还是knock noe's head? on one's head shake one’s head It's hard for one to beat a computer.beat 这句话如何翻译? It's hard for one to win against a computer A blind man who leans against a wall imagines that it''s the A blind man who leans against a wall imagines that it's the I back handed him against a wall. have a bee in one's head的意思 have a been in one's head 翻译 急用!