英语词组knocked their heads against the wall是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	knocked their heads against the wall
释义	(redirected from knocked their heads against the wall) knock (one's) head against a/the wall To attempt continuously and fruitlessly to accomplish some task or achieve some goal that is or seems ultimately hopeless. I feel like I've been knocking my head against the wall trying to understand this math equation. Some people are never going to agree with you on this, so it's no use knocking your head against a wall trying to convince everyone.
随便看	tip with tip you off tip you out tip you over tip your hand tip your hat tip you the wink tire tire billy tired tired and emotional tired her off tired her out tired him off tired him out tiredly tired me off tired me out tiredness tired of tired off tired out tired someone off tired someone out tired them off

英语词组固定搭配大全包含354030条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。

knock (one's) head against a/the wall