英文關鍵字
aeroplane
aerospace
air
aircraft
airfield
airliner
airplane
approach
arrival
arrive
arriving
atmosphere
aviation
background
blue
clean
cloudless
commercial
commute
contrail
cross
day
definition
departing
descend
engine
fast
flight
fly
high
jet
layer
line
ozone
plane
pollution
skyscape
smoke
space
speed
spread
stream
tourism
transport
travel
travelling
trip
two