空中in the sky;in the air;aerial;overhead
～補給air-supply;air-resupply /～待戰(zhàn)air alert/～飛人（雜技）flying trapeze/～封鎖aerial blockade/～劫持aerial hijacking/～警戒air alert/～樓閣castles in the air/～橋梁air bridge;airlift /～識別區(qū)air identification zone/～攝影aerophotography;aerial photography/～視察aerial inspection/～小姐 （空姐）air hostess;air stewardess/～掩護air umbrella;air cover (for the infantry)/～優(yōu)勢air superiority/～預警airborne early warning;AWACs/～偵察aerial reconnaissance/～走廊air corridor;air lane/～加油air refueling;inflight refueling /～加油機aerial refueller;inflight refueller;tanker plane/～交通管制air traffic control/～警報和控制系統(tǒng)airborne warning and control system/～客車air bus;Airbus/～快線express flights |