機器
adult
business
concentration
construction
control
conversation
development
discussing
discussion
document
employee
engineer
engineering
equipment
facility
factory
hard hat
hardhat
heavy
helmet
holding
horizontal
industrial
industry
job
machinery
maintenance
male
man
manufacturing
metal
metallurgy
metalwork
person
plant
production
professional
project
safety
standing
team
technician
technology
uniform
warehouse
work
worker
working
workshop