A gruelling activity is extremely difficult and tiring to do.
例句
He had complained of exhaustion after his gruelling schedule over the past week...完成上周紧张的日程安排后,他抱怨自己累得筋疲力尽。This flight was more gruelling than I had expected.这次飞行比我预想的更累!
英汉词典释义
adj.
紧张的,激烈的;使极度疲劳的
a gruelling climb叫人筋疲力尽的攀登The recruits were put through a week of gruelling endurance tests.新兵要接受为期一周艰苦的耐力测试。
英英词典释义
Adjective
1. characterized by toilsome 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"