英文關鍵字
clockwork
clock
mechanism
gear
vintage
time
watch
metal
wheel
macro
old
technology
detail
closeup
motion
cog
machine
steel
antique
precision
mechanical
retro
industrial
rotation
machinery
accuracy
part
inside
chronometer
industry
movement
close
design
timepiece
precise
ruby
speed
pinion
background
copper
pendulum
luxury
equipment
ancient
stopwatch
second