空调

air conditioning / air conditioner (including units that have a heating mode) / CL:臺|台[tai2]

empty / air / sky / in vain

to empty / vacant / unoccupied / space / leisure / free time

to transfer / to move (troops or cadres) / to investigate / to enquire into / accent / view / argument / key (in music) / mode (music) / tune / tone / melody

to harmonize / to reconcile / to blend / to suit well / to adjust / to regulate / to season (food) / to provoke / to incite

evaporative air conditioner / evaporative cooler

central air conditioning / (fig.) (neologism) ladies' man (contrasted with 暖男[nuan3 nan2], a guy who is attentive to his partner rather than to all and sundry)

air conditioned vehicle