英文關鍵字
adventure
aircraft
airplane
airport
airspeed
airways
allow
are
areoplane
british
business
city
commercial
descends
descent
destination
engine
enough
europe
flight
flouting
gentle
holiday
jet
land
landing
low
machine
made
man
metal
object
passenger
plane
rate
reduced
runway
speed
such
technology
that
touch
tourism
transport
travel
trip
vacation
vehicle
window
wing