英文關鍵字
age
animal
animation
background
big
body
clone
cold
columbian
comparison
cycle
elephant
era
extinct
extinction
fauna
field
fossil
fur
glacier
gray
grazing
herd
history
holocene
human
ice
illustration
isolated
its
large
lived
mammal
mammoth
mastodon
natural
nature
organism
paleontology
plain
pleistocene
pliocene
power
prehistoric
quaternary
size
snow
species
that
trunk
tusk
walk
walking
wild
wildlife
woolly