英文關鍵字
antenna
arm
background
blue
broadcast
broadcasting
building
built
cell
communication
communications
construction
contractor
day
denim
dish
electrical
electronic
engineer
engineering
equipment
fitting
foreman
hardhat
helmet
industrial
industry
install
installation
installer
installing
ladder
male
man
network
occupation
people
person
phone
pole
radio
satellite
site
sky
technology
telecommunication
television
wireless
work
worker