英文關鍵字
accuracy
background
business
chrome
chronometer
clock
closeup
coach
competition
countdown
counting
deadline
digital
equipment
fitness
hand
instrument
isolated
measure
measurement
mechanical
meter
metering
minute
number
object
old
precision
quick
race
record
red
second
silver
single
speed
sport
sports
start
stop
stopwatch
time
timer
timetable
tracking
urgency
vintage
watch
white