backbreaking
adjective uk/ˈbækˌbreɪ.kɪŋ/ us/ˈbækˌbreɪ.kɪŋ/
极费力气的；累人的
needing a lot of hard, physical effort and making you feel extremely tired
Digging the vegetable garden was backbreaking work. 给菜园松土是很累人的活儿。
Synonyms: arduousgruelling hard heavy punishing