英文關鍵字
agility
aviation
bats
cloud
colony
dusk
evening
feeding
flap
flight
fly
group
hunting
mammal
night
nocturnal
pteropus
quickness
shadows
silhouette
sky
speed
steady
travel
trees
wings
英文關鍵字
agility
aviation
bats
cloud
colony
dusk
evening
feeding
flap
flight
fly
group
hunting
mammal
night
nocturnal
pteropus
quickness
shadows
silhouette
sky
speed
steady
travel
trees
wings