英文關鍵字
architect
asian
background
blue
broadcast
building
cell
communication
communications
construction
contractor
day
dish
electrical
electronic
engineer
engineering
equipment
fitting
fixing
foreman
hardhat
helmet
home
house
industrial
industry
installer
ladder
male
man
mobile
network
outside
people
person
protection
radio
safety
satellite
site
sky
sunset
supervisor
technology
telecommunication
television
wireless
work
worker