stored heat

例句：

1. 1. The hot air from the engine is stored in a cylinder.
   发动机产生的热空气被储存在气缸里。
2. 2.The sun's stored heat warms the earth during the day.
   太阳储存的热量在白天温暖地球。
3. 3. The refrigerator stores thermal energy to keep food cold.
   冰箱储存热能，保持食物冷却。