air conditioner unit

例句：

1. 1.The air conditioner unit is located in the living room.
   空调机组位于客厅。
2. 2. The air conditioner unit needs to be serviced regularly to ensure proper functioning.
   空调机组需要定期维护，以确保正常运行。
3. 3. The air conditioner unit has been upgraded to improve energy efficiency.
   空调机组已升级以提高能效。