英文關鍵字
adult
african
afro
american
black
blue
business
clipboard
collar
company
control
distribution
electric
electrical
electrician
electricity
employee
engineer
engineering
ethnic
ethnicity
facility
happy
hardhat
helmet
industrial
industry
job
male
man
modern
occupation
overall
panel
portrait
professional
protection
recording
safety
station
substation
technical
technician
technology
transformer
uniform
work
worker
workplace
young