Air-conditioning is included in the car's base price. 空调系统算在汽车的基本价格里了。The air conditioning doesn't seem to be cooling the room much.这空调系统好像没怎么把房间变凉快。The air-conditioning system failed.空调系统出故障了。We've been having some trouble with the air-conditioning.我们的空调系统一直出问题。