英文關鍵字
alternative
architecture
barrage
canal
cascade
concrete
construction
dam
day
drop
eco
ecology
electric
electricity
energy
engineering
environment
fall
flood
flow
gate
generator
hydro
hydroelectric
industrial
industry
landscape
light
motion
mountain
natural
nature
outdoor
park
power
renewable
reservoir
river
rock
spillway
splash
station
stone
stream
structure
sun
sunny
turbine
water
waterfall