英文關鍵字
carrying
commuter
commuters
crowd
departing
emotional
fossil
fuel
junction
life
locomotive
means
motion
no
of
oil
people
railroad
safety
scene
slow
speed
stress
su
traffic
train
transport
transportation
trucking
urban
英文關鍵字
carrying
commuter
commuters
crowd
departing
emotional
fossil
fuel
junction
life
locomotive
means
motion
no
of
oil
people
railroad
safety
scene
slow
speed
stress
su
traffic
train
transport
transportation
trucking
urban