backbreaking

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++back·break·ing /ˈbækbreɪkɪŋ/ adjective  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 endless task, he realised why.• Training for the University boat race must be one of the most backbreaking, brain blowing experiences in sport.

back·break·ing adjectiveChineseSyllable  

backbreaking you difficult work physically and makes very Corpus tired is

backbreaking
back‧break‧ing /ˈbækbreɪkɪŋ/ adjective
backbreaking work is physically difficult and makes you very tired
     

THESAURUS

   ▪ tiring making you feel that you want to sleep or rest: The journey was really tiring. | I’ve had such a tiring day. | It was tiring work.
   ▪ exhausting extremely tiring: I had to drive nine hours without a break – it was exhausting. | an exhausting week of singing, acting, and dancing
   ▪ hard very tiring and difficult – used about days, journeys etc: a hard day at work | The last part of the journey was very hard.
   ▪ wearing /ˈweərɪŋ $ ˈwer-/ tiring because you have to use a lot of your mental energy, and often become bored – used about people, situations etc: I find her constant questions rather wearing. | Kids of that age can be very wearing. | His films always tend to have the same plots, which does get rather wearing after a while.
   ▪ gruelling British English, grueling American English (also punishing) very tiring physically or mentally – used when you have to keep doing something for a long time: a gruelling journey across the desert | a gruelling race | a punishing schedule | a punishing exercise regime
   ▪ backbreaking backbreaking work is extremely tiring and needs a lot of physical effort: Clearing the land was slow backbreaking work. | Laborers were paid $2 a day for backbreaking farm work.
   ▪ something is a killer informal used when saying that something is extremely tiring: Today was a real killer.
   ▪ fatiguing formal making you feel very tired: Factory work was repetitive and fatiguing.