1. The race became physically and mentally gruelling, strikingly beautiful and spectacular. 赛跑身体上并且精神上变得严厉、惊人地美丽、惊人。
2. It is a gruelling schedule, but one that Sevilla are viewing as a reward for their rise among the continent's football elite. 这对塞维利亚来说将是艰难的一个日程，但是塞维利亚的进步，是对非洲大陆足球精英崛起的一个奖励。
3. America's first free municipal university, founded in 1847, offered its services to everyone bright enough to meet its gruelling standards. 美国第一个免费的市立大学，成立于1847年，位每个聪明的学生提供教育，只要能达到它那苛刻的考试要求。
英英解释
adj.
1. characterized by toilsome effort to the point of exhaustion; especially physical effort
网络释义
gruelling 使人精疲力尽的;
gruelling trial 车轮式审讯;
six gruelling days and nights of negotiations 六日来日以继夜的谈判;
