英文關鍵字
animal
aquatic
beak
beautiful
birds
cleaning
cygnet
dabble
day
daylight
elegant
feathers
gorgeous
grace
graceful
lake
large
mute
nature
neck
one
outdoor
outside
pen
plumage
pond
river
scenery
scenic
serene
spring
summer
sunlight
sunny
sunshine
swans
tranquil
video
water
white
wild
wildlife
wing