英文關鍵字
aerial
air
aircraft
aviation
cloud
clouds
decrease
element
flight
frankfurt
germany
land
landing
main
movement
overcast
photograph
plane
sky
surface
takeoff
transportation
vessel
wing
英文關鍵字
aerial
air
aircraft
aviation
cloud
clouds
decrease
element
flight
frankfurt
germany
land
landing
main
movement
overcast
photograph
plane
sky
surface
takeoff
transportation
vessel
wing