Ключевые слова: agricultural, agriculture, air, aircraft, airfield, airplane, button, chemical, chemistry, cloud, competition, control, controlled, controller, crop, distant, drone, farm, farming, fertilize, fertilizer, field, flight, fly, flying, hand, handset, hobby, joystick, launch, male, man, model, outside, person, pesticide, pilot, piloting, plane, radio, receiver, remote, sky, spray, sprayer, spraying, toy, transmitter, transportation,