Ключевые слова: adventure, aeronautics, aerostat, air, backdrop, balloon, ballooning, before, begin, close, colorful, country, day, device, engine, fan, field, flight, flow, fly, gasoline, generating, generator, grass, ground, inflate, inflation, iron, landscape, morning, motor, nature, outdoor, people, preflight, preparation, preparing, process, propeller, screw, service, special, spring, start, summer, sun, system, tool, view,