Knox unit

例句：

1. 1. The Knox unitis responsible for monitoring the temperature and humidityin the room.
   Knox单元负责监控房间的温度和湿度。
2. 2. TheKnox unit wasdesigned to improve the efficiency ofthe heating system.
   Knox单元被设计用来提高供暖系统的效率。
3. 3. TheKnox unit has been installed inall classrooms to ensure proper ventilation.
   Knox单元已经安装在所有的教室中，以确保适当的通风。