英文關鍵字
abducted
abduction
alien
area
attack
character
creature
crop
extraterrestrial
fiction
field
floating
flying
glow
gravity
grey
hover
humanoid
invaders
invasion
kidnap
light
monster
mystery
saucer
science
scifi
sky
space
spaceship
star
summer
sundown
sunlight
sunrise
sunset
technology
terror
traveler
ufo
ufology
universe
vehicle
vessel
visitor
war
warning
weapon
yellow