英文關鍵字
antenna
arm
asian
background
broadcast
broadcasting
building
built
cell
channels
communication
communications
construction
contractor
day
dish
electrical
electronic
engineer
engineering
equipment
foreman
hardhat
helmet
house
industrial
industry
male
man
network
people
person
phone
pole
radio
roof
satellite
signal
site
sky
sunset
supervisor
technology
telecommunication
television
tower
transmission
wireless
work
worker