英文關鍵字
aeroplane
air
aircraft
airline
airliner
airplane
airport
airways
altitude
atmosphere
aviation
background
blue
clear
contrail
cross
disappear
dissolve
draw
engine
evening
exhaust
fast
flight
fly
fuel
high
horizontal
isolated
jet
journey
line
passenger
plane
pollution
sky
space
speed
tourism
traffic
trail
trails
transport
transportation
travel
vapor
view
white