be hitting (one's) head against a (brick) wall

To be attempting, continuously and fruitlessly, to accomplish some task or achieve some goal that is or seems ultimately hopeless. I feel like I've been hitting my head against a brick wall trying to understand this math equation. Calculating it like that is like hitting your head against a wall. Let me show you a shortcut.

词组	be hitting (one's) head against a (brick) wall
释义	be hitting (one's) head against a (brick) wall be hitting (one's) head against a (brick) wall To be attempting, continuously and fruitlessly, to accomplish some task or achieve some goal that is or seems ultimately hopeless. I feel like I've been hitting my head against a brick wall trying to understand this math equation. Calculating it like that is like hitting your head against a wall. Let me show you a shortcut. See also: head, hit, wall Farlex Dictionary of Idioms. See also: be banging (one's) head against a brick wall be banging your head against a brick wall be banging, etc. your head against a brick wall beat (one's) head against a stone wall knock (one's) head against a (brick) wall knock (one's) head against a/the wall knock head against a brick wall bang (one's) head against a brick wall bang (one's) head against a wall bang your head against a brick wall
随便看	be chilled to the marrow be chomping at the bit be chucking (it) down be chuffed to bits beck beck and call beckon beckon to beckon to (one) Becky with the good hair be cleaned out be climbing the walls be close/dear/near to somebody's heart be close to home be close to/near the mark be close to (one's) heart be close to the bone be close to the mark be clued in be cocksure of (oneself) be coining it be cold comfort become become a fan of (someone or something) be/come a poor second, third, etc.