英文關鍵字
aerial
background
blue
broadcast
builder
building
cable
cell
channels
clothing
communication
communications
construction
contractor
dish
electrical
electronic
engineer
engineering
equipment
fixing
foreman
hardhat
helmet
industrial
industry
install
installation
male
man
mobile
network
outside
people
person
pole
radio
receiver
roof
satellite
site
sky
technology
telecommunication
television
tower
transmitter
wireless
work
worker