英文關鍵字
algae
antic
background
beautiful
calm
cascade
clean
creek
ecology
environment
flora
flow
flowing
forest
green
idyllic
landscape
moss
motion
natural
nature
oil
old
outdoor
park
pattern
plant
polluted
pond
pure
refreshing
river
rock
scenery
scenic
season
splash
spring
stone
stream
sun
tranquil
travel
tree
turquoise
virgin
water
waterfall
wild
wood