英文關鍵字
active
activity
adult
adults
aged
alone
bad
call
caucasian
cellphone
communication
concentration
crisis
depression
disappointed
disturbing
domestic
elderly
focus
glasses
grandfather
holds
home
hopeless
information
leisure
life
lifestyle
listening
male
man
message
mobile
negative
news
old
only
pension
pensioner
phone
problem
reads
retired
retirement
sad
screen
selective
senior
seniors
serious
smart
smartphone
social
stress
talk
technology
telephone
test
thinking
unhappy
upset
using
wireless