英文關鍵字
3d
antenna
background
button
call
channel
chromakey
communicate
communication
contact
cordless
distance
emergency
frequency
green
hold
icon
illustration
isometric
listen
logo
message
mic
mobile
object
portability
portable
professional
radio
receiver
screen
security
sign
speak
speaker
symbol
talk
talkie
team
telecommunication
transmitter
two
twoway
voice
walkie
walkietalkie
wave
wireless