英文關鍵字
bicycle
big
bike
biker
cold
cycle
cyclist
dirt
excursion
extreme
fat
glasses
handheld
helmet
ice
icicle
liquid
man
manipulation
melting
midfat
motion
mountain
outdoors
pro
professional
racecourse
relaxing
ride
riding
river
run
slow
snow
snowy
sport
sportsman
tire
tourist
trick
walk
winter