英文關鍵字
accurate
alert
animation
arrows
beat
black
brown
chronograph
circle
clock
clocking
clockwork
countdown
counting
engineering
every
fast
front
hour
late
metal
meter
minute
precision
pulse
quick
reflection
rhythm
rotating
running
scale
second
shot
slow
speed
steel
stopwatch
stress
technology
ticking
time
timepiece
timer
turning
view
watch
work