英文關鍵字
antenna
arm
background
blue
broadcast
building
built
clothing
communication
communications
construction
contractor
dish
electrical
engineer
engineering
equipment
fix
foreman
hardhat
helmet
home
industrial
industry
install
installation
male
man
mobile
network
outside
people
person
phone
pole
protection
radio
repair
safety
satellite
site
sky
station
technology
telecommunication
television
transmission
wireless
work
worker