英语词组be hitting (one's) head against a (brick) 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	be hitting (one's) head against a (brick) wall
释义	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.
随便看	cross that bridge before I come to it cross that bridge before one comes to it cross that bridge before she comes to it cross that bridge before they come to it cross that bridge before we come to it cross that bridge before you come to it cross that bridge later cross that bridge when comes to it cross that bridge when come to it cross that bridge when he comes to it cross that bridge when I come to it cross that bridge when (one) comes to it cross that bridge when one comes to it cross that bridge when she comes to it cross that bridge when they come to it cross that bridge when we come to it cross that bridge when you come to it cross the aisle cross the floor cross the Great Divide cross their bows cross their fingers cross their mind cross their minds cross their palm

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