英文關鍵字
3d
abstract
accuracy
analog
arrows
blue
change
chrome
circle
classic
clock
closeup
conceptual
day
dial
difference
exact
face
fast
global
group
hour
international
measurement
minute
motion
nobody
number
objects
precise
punctuality
quick
stopwatch
threedimensional
ticking
time
timer
timezone
various
watch
world
zone