機器
african
black
cabinet
check
chief
construction
contractor
control
development
diversity
electrical
engineer
engineering
equipment
facility
factory
hardhat
heavy
helmet
industrial
industry
infrastructure
job
machinery
maintenance
male
man
manufactory
manufacturing
mechanic
metal
occupation
old
operation
people
plant
preventive
production
professional
protection
repair
safety
standing
technician
technology
uniform
warehouse
work
worker
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