機器
automatic
bottle
business
buy
buyer
buying
card
cash
cashier
cashless
charge
check
checkout
client
commercial
computer
concept
consumer
consumption
currency
debit
digital
food
hypermarket
indoor
inside
mall
market
money
pay
paying
payment
purchase
purchasing
retail
sale
scan
self
service
shelf
shop
shopping
store
supermarket
technology
terminal
transaction
urban
using