英文關鍵字
arm
background
broadcast
building
built
caucasian
clothing
communication
communications
construction
contractor
day
denim
dish
electrical
engineer
engineering
equipment
fixing
foreman
hardhat
helmet
industrial
industry
male
man
mobile
modern
network
occupation
outside
people
person
pole
radio
receiver
repair
roof
satellite
signal
site
sky
station
technology
telecommunication
television
tower
wireless
work
worker