機器
apprentice
building
business
career
cnc
collage
college
craft
drilling machine
education
engineer
engineering
factory
female
happy
industrial
industry
job
learning
male
mechanic
mechanics
men
mentor
people
person
production
professional
school
smile
smiling
student
teacher
teamwork
technology
teen
teenager
tool
trainee
training
vocation
vocational
woman
worker
working
workshop
young
youth