英文關鍵字
aerial
aero
aerospaceindustry
aid
air
aircraft
airplane
airvehicle
aviation
behind
bell
blade
blue
branches
carry
chop
chopper
clearsky
copter
dangerous
emergency
engine
equipment
fast
flight
fly
flying
fuselage
heavens
helicopter
help
high
hover
hovering
lift
modeoftransport
motion
paradise
piloting
rotor
situated
sky
spinning
stand
through
tool
transportation
travel
tree
view