Ключевые слова: 20s, adult, adults, authentic, book, books, campus, candid, casual, caucasian, college, copyspace, cropped, education, ethnic, ethnicity, female, friends, friendship, happiness, happy, indoor, indoors, informal, inside, learning, library, lifestyle, looking, male, man, men, natural, people, person, real, school, smile, smiling, standing, student, students, study, together, two, university, woman, women, young, youth,