DIFFICULTbackbreaking work is physically difficult and makes you very tired 〔工作〕累死人的,吃力的,非常繁重的► see thesaurus at tiring
Examples from the Corpus
backbreaking• Now, after thirty days at this backbreaking and endlesstask, he realised why.• Training for the Universityboatrace must be one of the most backbreaking, brainblowing experiences in sport.