空中交通管制
air traffic control
空中交通管制员
air traffic controller
空中客车
Airbus (Aircraft company)
空中小姐
stewardess; air hostess
空中楼阁
pavilion in the air (idiom); unrealistic Utopian construction; castles in Spain; imaginary future plans
空中花园
hanging gardens (Babylon etc); rooftop garden
空中飞人
trapeze artist; frequent flyer
疾控中心
Centers for Disease Control and Prevention (CDC); abbr. for 疾病預防控製中心|疾病预防控制中心[ji2 bing4 yu4 fang2 kong4 zhi4 zhong1 xin1]