英文關鍵字
cascade
clean
cold
creek
drinkable
environment
falls
ferns
flood
flora
flowing
flows
forest
fresh
green
landscape
lichen
liquid
moss
mountains
murmur
natural
nature
outdoor
peace
plants
potable
pure
rapids
refresh
refreshing
river
rocks
scenery
small
splash
spring
stones
stream
tranquil
vivid
water
waterfall
wet
wild
wilderness
woods