characterized by effort to the point of exhaustion; especially physical effort;
"worked their arduous way up the mining valley" "a grueling campaign" "hard labor" "heavy work" "heavy going" "spent many laborious hours on the project" "set a punishing pace"
例句
用作形容词(adj.)
The President has a punishing schedule for the next six months.总统今后六个月的工作日程十分繁忙。