Ключевые слова: 3d, adult, alone, attractive, bearded, caucasian, close up, coat, cute, darkhaired, desk, dna, double, engineer, engineering, focused, goggles, goodlooking, guy, handsome, helix, human, indoors, lab, laboratory, male, man, medical, medicine, model, modern, one, person, printed, research, safety, scientific, scientist, shorthaired, sitting, staring, strand, student, technology, undergraduate, university, work, young,