air-resistance

n.空气阻力

air jet, air letter, Air Marshal, air pocket, air pump, air raid, air rifle, air speed, air terminal, air traffic controller, Air Vice Marshal, air-bed, air-bladder, air-conditioned, air-conditioning, air-cooled, air-cushion, air-flight, air-hostess, air-raid, air-sea, air-to-air, air-waves, airborne, airbrush, Airbus, airconditioner, aircraft, aircraft carrier, aircraft-carrier, aircraftman, aircraftwoman, aircrew, airfield, airgun, airily, airing, airing cupboard, airless, airlift,