self-heat

例句：

1. 1. The self-heating pot is convenient for cooking.
   自热锅方便烹饪。
2. 2.The car's self-heating system can warm up the cabin quickly.
   汽车的自热系统可以迅速加热车厢。
3. 3.The hot air from the stove has a self-heating effect on the surrounding area.
   炉火产生的热气对周围区域有自热效应。