英文關鍵字
africa
african
aggressive
amphibius
animal
animals
aquatic
background
big
botswana
crowded
dangerous
delta
family
fat
fauna
game
group
habitat
head
herbivore
herd
hippo
hippopotamus
huge
lake
large
mammal
moremi
mouth
national
natural
nature
okavango
outdoor
park
pond
pool
reserve
river
safari
sunset
teeth
travel
water
wild
wilderness
wildlife