An air-conditioning unit outside the house or building runs uses electricity to cool the air and then sends into the building through openings in the rooms of the buildings.
An air-conditioning unit outside the house or building runs uses electricity to cool the air and then sends into the building through openings in the rooms of the buildings.
室外的一个空调装置则使用电力将空气的温度下降，下降的空气通过房间的通道送往整栋大楼。