forcing fan

例句：

1. 1.The new air conditioner has a forced fan that can be turned on and off at will.
   这款新空调有一个可随意开关的强制风扇。
2. 2. The fans in the room were all forced to shut down due to the high temperature.
   房间里的风扇都因为高温被迫关闭了。
3. 3. The forced fan was so loud that it disturbed the peace of the sleeping children.
   那台强制风扇的声音太大了，吵醒了正在睡觉的孩子。