機器
architect
business
businessman
caucasian
colleagues
construction
control
engineering
explaining
factory
female
foreman
hardhat
helmet
industrial
industry
inspecting
job
male
man
manufactory
manufacture
manufacturing
mechanic
men
metal
metallurgy
occupation
people
person
plant
production
professional
project
protection
recruitment
safety
security
standing
system
team
teamwork
technical
trainee
training
woman
work
worker
workshop