機器
colleague
adult
business
businessman
check
checklist
control
engine
engineer
engineering
factory
foreman
group
hardhat
heavy
helmet
indoor
industrial
industry
inspector
job
machinery
maintenance
man
manufacturing
mature
meeting
mentoring
monitor
occupation
person
power
production
profession
professional
recycle
safety
service
stock
subordinate
system
teamwork
technician
used
work
worker
working
workshop