cool flue gas

例句：

1. 1. The factory uses a cooling system to reduce the temperature of the flue gas before it is released into the atmosphere.
   工厂使用冷却系统来降低排放到大气中的烟气的温度。
2. 2. The new technology aims to cool down the flue gas and improve the efficiency of the power plant.
   新技术旨在冷却烟气并提高电厂的效率。
3. 3. The air pollution caused by the burning of fossil fuels has made it necessary to cool down the flue gasbefore it is released into the environment.
   化石燃料燃烧引起的空气污染使得在释放到环境中之前冷却烟气变得必要。