英文關鍵字
3d
abstract
alarm
analog
animation
arrow
background
black
classic
clock
color
data
day
deadline
design
dial
element
glossy
hour
icon
illustration
image
isolated
isometric
metal
minute
modern
motion
number
object
office
old
pointer
precision
reminder
round
running
second
sign
single
square
style
symbol
time
timer
urgency
wall
watch
white