floating spray column

例句：

1. 1. The engineer designed a floating spray columnto help the workers in the construction site.
   工程师设计了一个浮动喷雾柱，帮助工地上的工人。
2. 2. The floating spray column was usedto clean the air in the factory.
   浮动喷雾柱被用来清洁工厂的空气。
3. 3. The floatingspray column was a great innovation that improvedthe efficiency of the production process.
   浮动喷雾柱是一个伟大的创新，提高了生产过程的效率。