英文關鍵字
alarm
alarmclock
clock
clockwork
closeup
countdown
counter
counting
deadline
digit
digital
display
electronic
equipment
gadget
illuminated
instrument
lap
lcd
led
liquidcrystal
medical
minute
morning
number
numeral
numeric
object
power
precision
race
reminder
science
screen
second
splitsecond
stopwatch
tech
technology
ticktock
time
timecode
timer
visual
watch