英文關鍵字
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amphibian
animal
arvalis
background
bubble
call
color
communication
croak
crying
day
environment
esculenta
european
eye
fauna
film
frog
frogs
green
his
horizontal
image
inflates
jump
lake
loud
male
marsh
mating
moor
moving
natural
nature
noise
outdoor
people
pond
pouch
rana
river
romantic
sac
scream
song
songs
soundresonating
spring
swollen
throat
vocal
water
wild
wildlife