機器
30s
adult
asian
attention
chinese
dirty
duty
employee
engineer
engineering
facility
factory
foreman
hardhat
heavy
industrial
industry
job
labor
labor day
machinery
man
manufacturing
mechanic
metal
people
person
plant
portrait
production
professional
protection
protective
quality
safety
serious
service
skill
staff
steel
technician
watching
welfare
work
worker
workman
workplace
workshop
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