英文關鍵字
1920x1080
abstract
accuracy
animation
antique
background
balance
business
clock
clockworks
cogs
concept
connect
connection
cooperation
engine
gear
gears
group
ideas
industrial
industry
inside
inspiration
invention
link
machine
machinery
mechanical
mechanism
metal
motion
old
part
precision
rotate
rotation
solution
spinning
steel
teamwork
technology
time
together
transmission
turning
video
wheel
working