英文關鍵字
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animal
aquatic
beak
beautiful
beauty
bill
bird
birds
birdwatching
black
blue
clangula
color
colorful
conservation
duck
ducks
ecology
feather
feathered
feathers
gray
hyemalis
lake
longtailed
mask
natural
nature
ocean
oldsquaw
ornithology
outdoor
outdoors
pink
plumage
sea
shore
swim
tail
water
waterfowl
white
wild
wildlife
wing
wings
winter