機器
aim
aircraft
airliner
airplane
atmosphere
aviation
back
bend
blue
carbon
clear
condensation
course
curve
daytime
direction
distant
failure
flight
fly
flying
fuel
high
imprint
jet
journey
malfunction
motion
movement
plane
pollution
purpose
reason
route
sky
speed
trace
track
traffic
transport
transportation
traveling
trip
turbine
turn
vapor
way
why