英文關鍵字
aerial
air
antenna
blue
broadcast
broadcasting
business
cell
cellular
clouds
color
colors
communication
connection
construction
equipment
frequency
high
industry
internet
link
maintenance
metal
microwave
mobile
network
outdoor
painted
phone
radio
red
signal
sky
spring
staircase
station
steel
structure
telecom
telecommunication
telephone
tower
transmission
transmit
transmitter
transmitters
transmitting
uhf
very
vhf
wave
white
wireless