| 单词 | be banging, etc. your head against a brick wall | 
| 释义 | be banging, etc. your head against a brick wall be banging, etc. your head against a brick wall INFORMAL ► F0 to try to do something that is very difficult or impossible to achieve and therefore causes you to feel annoyed: » I keep asking her not to park there but it's like banging your head against a brick wall.Thesaurus+: ↑Trying and making an effort , ↑Effort and expending energy  | 
	
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