seal fan

例句：

1. 1. The sealfan is an effective way to cool downa room during summer.
   密封风扇是夏天有效降温房间的方法。
2. 2. The seal fan has becomea popular choice for those seeking a quieter environment.
   密封风扇已成为那些寻求更安静环境的人的首选。
3. 3. The seal fan is designedto keep the air circulating inthe room, making it feel more comfortable.
   密封风扇设计用来保持房间空气流通，使房间感觉更舒适。