GbEng
他因十分努力而筋疲力尽. He exhausted himself in the attempt.
受训的突击队员要参加令人筋疲力尽的突击课程. Trainee commandos are put through an exhausting assault course.
我已筋疲力尽了! I'm exhausted!
她做的工作把她累得筋疲力尽. She's knocking herself out with all that work.
我整天都在照料四个小孩, 确实已筋疲力尽了! I've been looking after four young children all day and I really am at the end of my tether!