英文關鍵字
hourglass
beach
sand
time
sea
summer
clock
glass
sandglass
concept
ocean
timer
coast
vacation
holiday
sun
background
challenge
environment
countdown
hour
relax
idea
water
past
nature
travel
lifestyle
minute
deadline
outdoor
sunny
business
summertime
blue
abstract
watch
relaxation
flowing
light
tropical
change
ecology
instrument