Ключевые слова: adult, background, blue, blue background, book, business, childhood, college, composite, concept, copy, copy space, cropped, design, digital, digital composite, education, hand, happy, holding, kid, knowledge, learn, learning, lifestyle, multiracial, no people, part of, people, person, school, sign, space, student, study, studying, symbol, technology, text, university, woman, young,