英文關鍵字
airplane
aviation
technology
transportation
aircraft
flight
plane
airworthiness
industry
airport
air
service
safety
aeroplane
vector
flat
transport
concept
banner
engine
maintenance
cartoon
repair
mechanic
background
fuel
equipment
mechanical
business
worker
hangar
technician
performance
professional
speed
machine
man
sky
inspection
private
task
airfield
machinery
working
checking
support
fly
commercial
jet