英文關鍵字
abstract
action
anticipation
back
background
black
business
checking
clock
closeup
color
concepts
conceptual
contemporary
countdown
crystal
dark
deadline
endurance
equipment
eternity
falling
fast
flowing
glass
heap
hourglass
icon
instrument
lapse
light
macro
measurement
measuring
object
oldfashioned
past
patience
pressure
retro
sand
space
speed
symbol
time
timelapse
timepiece
timer
transparent
video