长期高压工作后，他患上了严重的职业倦怠，不得不休假调整。

After months of nonstop overtime, he suffered from ___burn-out and needed a long break.

长时间加班导致他完全精疲力竭了。

Working overtime for too long led to his complete ___burn-out.

发动机在飞行过程中烧毁。

The engine's ___burnout happened during the flight.