英文關鍵字
arm
background
blue
broadcast
building
built
caucasian
cell
communication
communications
construction
day
dish
electrical
engineer
engineering
equipment
fitting
foreman
hardhat
helmet
industrial
industry
installer
installing
ladder
male
man
network
people
person
phone
pole
radio
repair
roof
satellite
signal
site
sky
supervisor
technology
telecommunication
telephone
television
transmission
transmitter
wireless
work
worker