英文關鍵字
aerial
arm
asian
background
blue
broadcast
broadcasting
building
cell
clothing
communication
communications
construction
dish
electrical
electronic
engineer
engineering
equipment
fitting
fixing
foreman
hardhat
helmet
home
house
industrial
industry
installing
ladder
male
man
mobile
network
occupation
people
person
protection
radio
satellite
signal
site
sky
technology
telecommunication
television
wireless
work
worker