英文關鍵字
abstract
background
beautiful
cascade
concrete
countryside
dam
destination
drop
energy
environment
fall
falls
fast
flow
flowing
fresh
irrigation
landscape
moist
motion
natural
nature
outdoor
outdoors
overflow
pond
power
rapid
rapids
river
running
scenic
spillway
splash
stone
stones
stream
supply
texture
tourism
travel
water
waterfall
waterway
weir
white