英文關鍵字
river
water
cascade
rock
stream
green
summer
nature
outdoor
artificial
travel
beautiful
stone
waterfall
landscape
park
forest
background
environment
flowing
small
fall
flow
tourism
wet
scenery
decoration
pond
splash
creek
plant
tree
purity
fresh
grass
tranquil
clean
recreation
serenity
liquid
transparent
clear
construction
video
footage
motion