英文關鍵字
aluminum
bicycle
bike
black
circle
cycle
equipment
leisure
metal
metallic
motion
nobody
part
recreational
rotating
round
rubber
silver
spin
spoke
sport
sports
steel
tire
transport
transportation
wheel
wheels
英文關鍵字
aluminum
bicycle
bike
black
circle
cycle
equipment
leisure
metal
metallic
motion
nobody
part
recreational
rotating
round
rubber
silver
spin
spoke
sport
sports
steel
tire
transport
transportation
wheel
wheels