1. 筋疲力尽的：grovel卑躬屈膝v | grueling筋疲力尽的 | cruel残酷的a
2. 重罚：gruel 稀粥 | grueling 重罚 | gruesome 可怕的
3. 严罚/严惩：gruel /稀饭/粥/ | grueling /严罚/严惩/ | gruelling /严罚/严惩/
4. 令人筋疲力尽的：prefabricated bungalow 活动平房 | grueling 令人筋疲力尽的 | drench 浸泡
adj
1. characterized by effort to the point of exhaustion
especially physical effort
e.g. 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
Synonym: arduousbackbreakinggruellinghardheavylaboriousoperosepunishingtoilsome