英文關鍵字
amphibian
animal
animals
background
bellied
biological
biology
bobbysoxer
bog
bombina
clean
couple
creature
creatures
ecology
ecosystem
environment
environmental
filthy
frog
grow
herpetology
hideous
hydrobiology
larva
larvae
life
many
metamorphosis
pollution
poluted
pond
pool
puddle
shifter
splash
swarm
swim
tadpole
toad
underwater
wallow
water
white
wild
wildlife
yellow
young
zoological
zoology