英文關鍵字
aqua
beautiful
brook
brooklet
calm
carpathian
cascade
cataract
cleanness
climber
cold
creek
creeper
dirt
drain
earth
earthroad
ecology
falls
fern
flood
flow
force
forest
green
moist
mountain
natural
plant
pool
purity
purl
rain
river
rivulet
road
run
soil
spout
spring
stone
stream
streamlet
tranquil
trickle
unsurfaced
water
waterfall
wet
wood