英文關鍵字
sky
flight
fly
jet
plane
speed
trail
trip
condensation
aeroplane
aviation
aircraft
airliner
transportation
airplane
track
blue
white
travel
engine
journey
smoke
transport
high
air
line
background
atmosphere
commercial
flying
pollution
supply
trace
video
clear
diagonal
voyage
abstract
airline
business
technology
energy
wing
way
turbine
passenger
machine
fast
motion