英文關鍵字
two
bewick
swans
walking
field
looking
food
larger
common
mute
swan
distinguised
yellow
stripe
thier
beak
distinguished
thei
like
species
animals
protected
queen
crown
elegant
pair
unison
feathers
white
large
waddle
together
couple
love
cute
beauty
nature
beautiful
natural
video
rare
uncommon
unexpected
neck
wings
fly
flight
reserve
wild
wildlife
outdoors
people