英文關鍵字
arm
background
blue
broadcast
builder
building
cell
clothing
communication
communications
construction
denim
dish
electrical
engineer
engineering
equipment
fitting
fix
foreman
hardhat
helmet
industrial
industry
install
installer
ladder
male
man
modern
network
occupation
people
person
pole
protection
radio
receiver
safety
satellite
signal
site
sky
technology
telecommunication
television
wireless
work
worker