英文關鍵字
aerial
antenna
asian
background
broadcast
building
cell
communication
communications
construction
day
denim
dish
electrical
engineer
engineering
equipment
foreman
hardhat
helmet
house
industrial
industry
installation
ladder
male
man
mobile
modern
network
occupation
people
person
phone
pole
radio
receiver
repair
satellite
signal
site
sky
supervisor
technology
telephone
television
transmission
wireless
work
worker