英文關鍵字
background
bike
challenge
close
cloudy
country
cross
cyclist
demarcation
detail
downhill
fast
his
man
nature
outdoor
outside
park
passing
race
racing
shot
speed
summer
sunny
track
trail
uphill
winning
young
英文關鍵字
background
bike
challenge
close
cloudy
country
cross
cyclist
demarcation
detail
downhill
fast
his
man
nature
outdoor
outside
park
passing
race
racing
shot
speed
summer
sunny
track
trail
uphill
winning
young