英文關鍵字
africa
african
amphibius
animal
animals
aquatic
bank
big
couple
dive
ecology
environment
flock
game
green
herbivore
hippo
hippopotamus
hippos
large
lazy
mammal
many
nature
ocean
outdoor
play
reserve
ripple
river
rock
safari
scenery
seagulls
selous
sleep
society
southern
summer
swim
swimming
tanzania
thailand
time
tired
travel
water
wild
wilderness
wildlife
young