英文關鍵字
airport
animal
arrival
bag
baggage
bomb
canine
check
conveyor
crime
customs
destination
dog
drug
explosive
federal
fighting
footage
gunpowder
handheld
handler
hexogen
luggage
obedient
officer
opium
patrol
pet
plastid
police
protect
protection
rescue
search
security
service
smell
sniff
sniffer
spaniel
suitcase
terror
terrorism
travel
trotyl
uniform
video
weapon
working