英文關鍵字
air
alone
animal
asian
autumn
big
building
cage
camp
captive
captivity
ear
elephant
enormous
fauna
gray
head
heavy
huge
intelligence
ivory
large
long
male
mammal
mammalian
moves
natural
nature
nobody
nopeople
northern
one
outdoor
outside
pachyderm
proboscis
season
single
skin
strength
strong
surrounding
tropical
trunk
tusk
walk
wild
wildlife
zoo