英文關鍵字
sky
helicopter
modern
silhouette
hovering
bottom
black
air
aircraft
military
fly
blue
flight
vehicle
chopper
aviation
pilot
transportation
rescue
rotor
transport
airplane
hover
technology
blade
airshow
travel
copter
plane
propeller
flying
helicopters
tourism
fighter
war
speed
business
aerial
landing
brasil
dusk
view
force
white
motion
background
cloud
wing