air brake

brake worked by air pressure 气闸; 气压制动器.

ahoy, AI, aid, aide, aide-de-camp, aide-memoire, AIDS, ail, aileron, ailing, ailment, aim, aim at, aim for, aimless, aimlessly, aimlessness, ain't, air, air base, Air Chief Marshal, air commodore, air force, air hostess, 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,