英文關鍵字
account
adult
aging
background
bank
banking
business
buy
buyer
card
caucasian
citizen
code
commerce
communication
computer
connection
credit
customer
cyberspace
debit
elderly
eyeglasses
finances
happy
holding
home
indoor
internet
laptop
learn
makes
man
modernity
money
old
online
order
pay
paying
payment
pensioner
person
plastic
purchases
sale
senior
shopping
sitting
smartcard
tablet
technology
websurfing
years