burned out 烧坏;烧毁;熄灭;耗尽;筋疲力尽

【例句】
By five o'clock in the afternoon we were all burned out from working.
到了下午5点，我们已经干得筋疲力竭了。

By the age of 25 she was completely burned out and retired from the sport.
她到25岁时就已体力耗尽，退出了体坛。