Ключевые слова: apprentice, business, career, caucasian, class, college, craft, education, female, girl, happy, horizontal, industrial, industry, job, learning, lesson, male, man, mechanic, men, old, people, person, profession, professional, safety, school, skill, smiling, student, studying, teacher, technology, teen, teenage, teenager, tool, trainee, training, tutor, university, vocation, vocational, woman, worker, working, workshop, years, young,