Ключевые слова: above, advance, aeroplane, air, aircraft, airliner, airplane, airport, atmosphere, aviation, azure, blue, clear, cloudless, commercial, condensation, course, direction, distance, europe, fast, flight, fly, free, germany, height, high, hyperacoustic, jet, journey, liner, motion, move, plane, pollution, route, sky, smoke, space, speed, succeed, success, supersonic, tourism, trace, trail, transport, transportation, travel, world,