Ключевые слова: active, adult, aging, athlete, ball, bright, caucasian, close up, clothing, competitive, court, day, detailed, elder, equipment, exercising, fitness, focus, focused, hands, healthy, hobby, individual, lifestyle, lighting, male, man, motion, natural, occupation, old, one, outfit, outside, person, player, playing, position, practicing, process, racket, racquet, retirement, senior, sport, sunlight, tennis, view, vitality, wear,