英文關鍵字
adjusting
adjustment
alignment
background
bicycle
bicyclist
bike
brake
chain
circle
detail
engine
equipment
fix
hand
industrial
job
maintenance
male
man
mechanic
metal
metallic
mountain
object
part
person
process
rear
repair
rim
rotating
round
screw
service
socket
spoke
steel
technician
technology
tighten
tire
tool
truing
wheel
wheels
work
worker
workshop
wrench