cooling-down method

例句：

1. 1.The process of cooling down the engine is essential for maintaining its efficiency.
   冷却发动机的过程对于保持其效率至关重要。
2. 2. During the cooling-down period, the temperature drops significantly.
   在冷却期，温度显著下降。
3. 3.The engineers used a cooling-down method to prevent the equipment from overheating.
   工程师们使用了一种冷却方法，以防止设备过热。