英文關鍵字
bicycle
seat
adjustment
line
symbol
outline
bike
service
complex
setting
research
fix
broken
details
cogset
pedals
replacement
linear
contour
logo
background
lined
frame
wheel
alignment
maintenance
rods
fork
straightening
chain
handlebar
elimination
shifters
icon
motion
graphic
animation
pictogram
hd
animated
item
sign
black