機器
adult
control
conversation
development
elder
engine
engineer
equipment
facility
factory
hardhat
heavy
helmet
industrial
industry
jacket
job
labor
look at camera
machinery
male
man
manufacturing
mature
mechanic
occupation
old
operating
people
person
plant
production
professional
quality
repair
safety
senior
skill
technical
technician
technology
tool
uniform
unit
work
worker
workman
workplace
workshop