英文關鍵字
4g
broadband
cellular
communication
connecting
connection
digital
fourth
future
generation
mobile
modern
network
no
people
phone
technology
telecommunications
trend
wireless
英文關鍵字
4g
broadband
cellular
communication
connecting
connection
digital
fourth
future
generation
mobile
modern
network
no
people
phone
technology
telecommunications
trend
wireless