英文關鍵字
accuracy
alarm
alert
appointment
bell
business
circle
clock
closeup
concept
countdown
counter
day
deadline
dial
face
flat
hour
late
lunch
measure
measurement
meter
midnight
minute
modern
morning
nobody
noon
number
object
office
pointer
precise
punctual
reminder
ring
schedule
second
sign
speed
symbol
ticking
time
timer
urgent
wake
wall
watch
white