英文關鍵字
airline
airport
airports
arrival
baggage
boarding
check
checked
checking
computer
control
counter
departure
detector
empty
entrance
entry
flight
gate
guard
hand
inspection
international
luggage
machin
machine
monitoring
passenger
plane
point
preflight
primary
procedure
protection
ray
risk
safety
scanner
screening
search
security
sensor
tape
technology
terminal
terrorism
terrorist
transportation
traveler
trip
waiting