英文關鍵字
aqua
beautiful
brook
brooklet
calm
cataract
clean
cleanness
cold
creek
creeper
down
drain
dribble
drinkable
drip
dripple
drop
ecology
environment
falls
flood
flora
flow
force
forest
green
jet
leaf
lichen
moist
moss
natural
plant
pond
pool
purity
purl
river
rivulet
run
spout
spring
stone
stream
tranquil
trickle
water
waterfall
wet