英文關鍵字
antenna
architect
asian
background
blue
broadcast
builder
building
caucasian
clothing
communication
communications
construction
day
denim
dish
electrical
electronic
engineer
engineering
equipment
fitting
foreman
hardhat
helmet
home
industrial
industry
ladder
male
man
modern
network
people
person
phone
protection
radio
satellite
signal
site
sky
technology
telecommunication
television
tower
transmit
wireless
work
worker