機器
adult
beginnings
business
concentration
control
control panel
cutting
employee
engineer
engineering
equipment
evils
factory
guidance
hard hat
helmet
hispanic
industry
inspector
lathe
latin
looking at camera
machinery
maintenance
man
manager
manufacturing
mechanic
metal
metalwork
numerical
occupation
operating
operator
person
plant
portrait
production
safety
service
steel
technician
technology
uniform
warehouse
working
workshop