pre-cooling by autoflow

例句：

1. 1.The refrigerator uses pre-cooling technology to keep food fresh.
   冰箱使用预冷却技术来保持食物新鲜。
2. 2. Before the game, the players need to do some pre-cooling exercises.
   比赛前，球员们需要做一些预冷却运动。
3. 3. The company is using pre-cooling technology to improve its energy efficiency.
   该公司正在使用预冷却技术来提高其能源效率。