Ключевые слова: 3d, 3d rendering, background, book, books, business, collection, college, color, colored, concept, course, dictionaries, dictionary, education, educational, english, flags, french, german, group, handbook, illustration, isolated, italian, knowledge, language, learn, learning, lessons, library, literature, multicolored, row, school, spanish, speak, student, study, studying, success, teaching, text, textbook, translate, translation, university, vocabulary, white,