英文關鍵字
action
active
adrenaline
adventure
athletics
bicycle
bicyclist
bike
biker
biking
bmx
challenge
compete
competition
cross
crosscountry
cycle
cycling
cyclist
dirt
edges
enduro
extreme
fitness
freedom
healthy
male
man
outdoors
outside
pedaling
physical
practice
race
racing
ramp
rider
riding
sportive
sports
track
training
trial
vehicle