機器
business
caucasian
construction
control
employee
engineer
engineering
equipment
factory
hard
hardhat
heavy
helmet
indoors
industrial
industry
job
labor
logistics
maintenance
male
man
manager
manufacture
manufacturing
mechanic
mechanical
metal
occupation
operating
operator
people
portrait
process
production
professional
safety
steel
technician
technology
uniform
warehouse
work
worker
workman
workplace
workshop
yellow
young