英文關鍵字
sign
metal
enclosure
zoo
park
reserve
fence
barrier
wall
walls
steel
strong
electrified
electric
lines
line
elephant
elephants
animal
mammal
african
africa
trunk
grey
asian
asia
tropical
jungle
exotic
paddock
bull
male
eating
feeding
dark
night
outside
moonlight
moon
light
lit
moonlit
warm