英文關鍵字
air
animal
animals
audio
autumn
bird
common
crane
cranes
day
diepholz
during
eurasian
fall
field
flight
flying
germany
group
gruidae
grus
high
landing
migrating
motion
nature
slow
sound
the
wings
英文關鍵字
air
animal
animals
audio
autumn
bird
common
crane
cranes
day
diepholz
during
eurasian
fall
field
flight
flying
germany
group
gruidae
grus
high
landing
migrating
motion
nature
slow
sound
the
wings