Ключевые слова: action, activity, adults, blurred, competition, daytime, exercise, exercising, friends, friendship, game, gesture, gesturing, handshake, men, net, people, relationship, selective focus, shaking hands, sport, sporting, sportive, sportsmen, sportswear, sporty, summer, summertime, team, tennis, tennis court, tennis equipment, tennis racquet, together, togetherness, training,