英文關鍵字
aqua
brook
cascade
cascading
clean
current
down
drink
eddy
energy
environment
falls
fast
flow
flowing
foam
forest
fresh
froth
frothy
garden
h2o
jungle
liquid
motion
mount
mountain
move
moving
nature
rainforest
rapids
recreation
relaxation
river
steps
stream
streaming
subtropical
thirst
torrent
tropical
vacation
water
waterfall
waterstream