英文關鍵字
action
ancient
anticipation
antique
back
background
brown
business
center
checking
clock
close
concepts
contemporary
countdown
crystal
dark
deadline
endurance
eternity
falling
flow
flowing
glass
hourglass
ideas
instrument
light
management
measurement
measuring
minute
moment
object
old
past
patience
present
pressure
reflection
retro
running
sand
sandglass
space
strews
sunlight
symbol
time
timer
transparent
urgency
watch