checkpoint
機器
airline
airport
area
arrival
backpack
bag
baggage
belt
business
casual
check
checkin
checking
company
control
conveyor
counter
crowd
departure
desk
flight
gate
information
journey
large
line
luggage
measure
movement
overweight
passenger
point
rail
safety
scanner
security
suitcase
terminal
tourism
transportation
travel
traveler
trip
vacation
weight
working
yellow