英文關鍵字
swan
one
cygnet
family
unit
pair
swans
adorable
animal
animals
aquatic
avian
baby
beauty
bird
birds
couple
day
elegance
feathers
feet
fowl
grass
green
grey
lake
landscape
little
love
nature
ornithology
outdoor
outdoors
park
spring
summer
sun
swim
three
water
webbed
white
wild
wildlife
wing
wings
young
youth