Ключевые слова: adult, asia, asian ethnicity, book, boys, caucasian ethnicity, cheerful, child, childhood, chinese ethnicity, cute, day, digital tablet, discovery, education, elementary age, enjoyment, fun, grass, green color, happiness, healthy lifestyle, holding, joy, learning, leisure activity, lifestyles, looking, males, men, nature, one person, outdoors, people, playing, public park, reading, recreational pursuit, relaxation, small, smiling, springtime, standing, student, studying, summer, sunlight, technology, tree, young adult,