機器
3
accessories
alloy
background
bearings
bicycle
bike
black
bottom
bracket
cassette
chain
chainring
chrome
closeup
crank
crankset
cups
cycle
equipment
frame
gear
gearing
isolated
metal
metallic
mountain
mountain bike
mountainbike
mtb
part
rear
ring
set
shiny
silver
speed
sports
steel
technology
teeth
transport
vehicle
wheel
white