空气调节装置

例句：

1. 1. Theair-conditioning system in the officeis very efficient.
   办公室的空调系统非常高效。
2. 2. The new air-conditioning unithas been installed in the living room.
   新安装的空调单元已安装在客厅。
3. 3. Air-conditioning is essential for maintaining acomfortable indoor environment.
   空调对于保持室内舒适环境至关重要。