英文關鍵字
amphibia
amphibian
animal
aquatic
background
beautiful
behaviour
blown
bubble
bullfrog
close
closeup
common
croak
croaking
edible
esculenta
europe
european
fauna
frog
green
habitat
head
inflated
inflating
lake
life
marsh
natural
nature
pelophylax
pond
rana
ridibundus
river
sac
skin
small
swamp
toad
two
water
wet
wild
wildlife