fan drum

例句：

1. 1. Thefan is designed to cool the roomefficiently.
   这台风扇设计用来有效地冷却房间。
2. 2. The old winder has been replacedby a new one.
   旧的风车已经被新的风车所取代。
3. 3. The fansare playing a game of catch in thepark.
   孩子们在公园里玩捉迷藏游戏。