英文關鍵字
amphibian
anatomy
animal
anuras
aquarium
aquatic
belong
biology
cartilaginous
constituted
culture
depth
diversity
eggs
feed
fisherman
fishing
flipper
fluvial
food
freshwater
frog
frogs
great
life
long
marine
migration
oceanarium
order
predator
ranidae
river
set
swimming
tadpole
that
tongue
water
wild
wildlife