英文關鍵字
river
mountain
stream
turquoise
rapid
water
white
oxygen
bubbles
flow
clean
fresh
cold
passing
waterfall
stones
fell
saturated
hue
background
summer
nature
spring
outdoor
rock
blue
environment
flowing
travel
beauty
pure
wild
natural
scenic
cascade
beautiful
tourism
splash
slow
motion
film
moving
wet
horizontal
view
rich
sizes
slight