He had complained of exhaustion after his gruelling schedule over the past week.完成上星期紧张的日程安排后, 他抱怨说自己累得筋疲力尽。

I'd had a gruelling day of interviews with the media.我接受了一天的媒体采访, 真折磨人。

It was a gruelling three-round competition.这场比赛很累人, 一共有三轮。