Ключевые слова: 2, adult, arm, background, blue, body, business, caucasian, child, closeup, communication, concept, count, counting, female, finger, fingers, gesture, gesturing, greeting, hand, hands, hello, help, human, idea, index, isolated, number, open, palm, part, people, person, show, showing, sign, skin, stop, symbol, thumb, touch, two, up, white, woman, wrist, young,