to beat one's head against a (brick) wall

Definição e significado de "beat one's head against a (brick) wall"em inglês

to beat one's head against a (brick) wall
01

dar murro em ponta de faca, insistir em vão

to repeatedly try to do or achieve something without success
idiom
Exemplos
Trying to fix the old system felt like hitting my head against a brick wall.
Tentar consertar o sistema antigo parecia dar murro em ponta de faca.
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