英文關鍵字
anatoidea
and
animal
anseriformes
aquarius
aquatic
aves
beak
biology
bird
close
day
duck
ducks
eco
ecology
environment
exterior
feather
floating
freshness
growing
growth
habitat
lake
leaf
leg
legs
life
lighting
mallard
membrane
natural
nature
palmiped
park
pond
preserve
river
sight
submerged
swim
swimming
under
water
wildlife
wing