英文關鍵字
alpine
alps
beautiful
bubbling
cascade
clean
cool
country
countryside
creek
current
environment
europe
flood
flow
flowing
forest
fresh
green
impetuous
moss
motion
mountain
nature
park
power
quick
rapids
river
rock
scenery
small
sparkling
speed
spring
stone
stream
summer
torrent
travel
trees
water
watercourse
waterfalls
white
wild
woods