airspace

n [U] part of the earth's atmosphere above a country and legally controlled by that country 空域; 领空: a violation of British airspace by foreign aircraft, ie flying over Britain without permission 外国飞机对英国领空的侵犯.

aircraftman, aircraftwoman, aircrew, airfield, airgun, airily, airing, airing cupboard, airless, airlift, airline, airliner, airlock, airmail, airman, airplane, airport, airship, airsick, airsickness, airtight, airway, airwoman, airworthiness, airworthy, airy, airy-fairy, aisle, aitch, aitchbone, ajar, aka, akimbo, akin, Alabama, alabaster, alacrity, alarm, alarm clock (also alarm), alarmed,