ADJ 烧毁的;烧坏的 Burnt-out vehicles or buildings have been so badly damaged by fire that they can no longer be used.
...a burnt-out car. 烧毁的汽车
ADJ 精疲力竭的;劳累过度的 If someone is burnt-out, they exhaust themselves at an early stage in their life or career because they have achieved too much too quickly.
But everyone I know who kept it up at that intensity is burnt out. 我所认识的每个一直保持那种强度的人都劳累过度。