英文關鍵字
alarm
alphabet
analog
animation
automatic
black
board
cartoon
classic
clock
countdown
counter
dashboard
date
day
device
display
equipment
figure
flip
font
hour
icon
indicator
info
information
mechanic
mechanical
mechanism
meter
minute
motion
number
numeral
numerical
object
old
outdated
panel
retro
score
scoreboard
sign
style
symbol
technology
template
time
timer
vintage
watch