英文關鍵字
alien
aliens
alpha
animal
area
area51
army
box
bunker
cage
captured
contained
container
creature
dangerous
door
doors
element
facility
green
greenscreen
industrial
keyed
lab
lock
locked
material
metal
military
missile
missiles
monster
nuclear
nuke
nukes
open
opens
radiation
research
rocket
rockets
science
screen
sealed
secret
security
top
unlocked
unlocks
weapons