英文關鍵字
acceleration
action
active
are
athlete
athletes
bleachers
casual
celebration
cheerful
clothing
competing
competition
dust
dusty
engine
engines
enjoyment
event
excitement
fans
fast
fun
group
hobby
joy
large
man
men
motion
moto
motor
motorbike
motorcycle
motorcycles
motorcyclist
motorized
motorsport
movement
outdoors
people
performance
powerful
professional
race
racers
real
ride
riding
shape
spectators
speed
sport
succeed
success
these
track
travel
waiting
wheels
will