English version

sweat blood

From Longman Dictionary of Contemporary Englishsweat bloodsweat bloodWORK HARDto work extremely hard to achieve something Beth sweated blood over that article. blood
Examples from the Corpus
sweat bloodI could have understood it in Cottee's case if he had been sweating blood for Everton.Although I remember seeing some one eating chips from a story I'd sweated blood on when I was working in Worcester.Donald sweated blood to build up his business.If I had to sweat blood it would be done.
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