英文關鍵字
active
adult
adults
aged
alone
app
cell
close
communication
connection
device
domestic
electronics
gadget
generation
holding
home
information
internet
life
lifestyle
lifestyles
looking
mature
media
men
message
mobile
modern
network
old
only
pensioner
people
person
phone
portable
retired
retirement
senior
seniors
smart
smartphone
social
support
technology
using
wireless