機器
adult
african
american
backpack
black
book
buy
casual
college
commerce
digital
education
electronic
guy
hipster
internet
library
literature
male
man
mobile
online
order
payment
purchase
retail
screen
selfservice machine
service
shop
standing
store
student
successful
terminal
textbook
ticket
touch
touchscreen
transfer
university
urban
vending
vending machine
window
young