英文關鍵字
africa
african
aggressive
amphibious
amphibius
angry
animal
aquatic
attack
botswana
conservation
danger
dangerous
delta
face
fight
game
habitat
happy
head
herbivore
hippo
hippopotamus
huge
lake
large
male
mammal
massive
moremi
mouth
national
natural
nature
okavango
open
outdoor
park
portrait
reserve
river
safari
south
tusk
water
white
wild
wilderness
wildlife
young