air-conditioning /ˌeɚkənˈdɪʃənɪŋ/ noun Learner's definition of AIR-CONDITIONING
[noncount]
: a system used for cooling and drying the air in a building, room, etc.空调系统 —
often used before another noun常用于另一名词前 —
abbreviation AC — air-conditioned
/ˌeɚkənˈdɪʃənd/ adjective