恒湿器

例句：

1. 1. The room is kept ata constant temperature to maintain a comfortable environment.
   房间保持恒定的温度以维持舒适的环境。
2. 2.The refrigerator has a built-in thermostat that automatically adjusts the temperature.
   冰箱内置了温度计，可以自动调节温度。
3. 3. The air conditioner in this room isdesigned to keep it at a comfortable temperaturethroughout the day.
   这个房间里的空调被设计成一整天都能保持舒适的温度。