機器
automated
automatic
buy
card
caucasian
check
city
commuter
consumer
control
device
electronic
europe
italy
journey
lady
modern
passenger
pay
payment
person
public
railroad
railway
railway station
reader
service
station
system
technology
terminal
ticket
ticket machine
tourism
tourist
train
transport
transportation
travel
trip
urban
validate
validating
validation
validator
vending
verification
woman