機器
african
apprentice
blue
collar
cutter
engineer
engineering
equipment
factory
gas
gear
glasses
goggles
indoors
industrial
industry
job
labor
laborer
machinist
male
man
manual
material
mechanic
metal
occupation
operating
operator
overall
oxygen
people
portrait
profession
professional
protective
skill
standing
table
technician
tool
uniform
welder
welding
work
worker
workplace
workshop
young