英文關鍵字
abstract
antique
background
balance
chain
circle
clock
concept
construction
cut
cutout
design
gear
gears
hand
hands
hanging
hours
idea
illustration
isolated
measure
metal
minute
motion
movement
new
notched
old
out
pendulum
power
ratchet
ratchetwheel
second
seconds
swinging
symbol
technology
time
twelve
vintage
wall
watch
wheel
white
wood
work
year