英文關鍵字
aerial
background
blue
broadcast
builder
building
cable
caucasian
communication
communications
construction
contractor
denim
dish
electrical
engineer
engineering
equipment
fixing
foreman
hardhat
helmet
home
house
industrial
industry
installer
ladder
male
man
network
outside
people
person
radio
receiver
safety
satellite
site
sky
station
supervisor
technology
telecommunication
television
transmit
wireless
work
worker