英文關鍵字
adult
apartment
architect
automatic
board
business
caucasian
civil
computer
construction
control
device
drawings
electronics
engineer
engineering
equipment
factory
flat
helmet
industrial
industry
inspector
interior
job
machine
male
man
manufacturing
men
occupation
office
operator
panel
person
plan
portrait
power
professional
room
safety
site
specialist
station
system
technical
technician
technology
work
worker