英文關鍵字
background
barrage
cascade
cataract
current
dam
dike
dyke
energy
environment
fall
flood
flow
flowing
fluid
flux
fresh
hydro
hydroelectric
industrial
lake
landscape
leakage
movement
natural
nature
outdoor
pass
power
powerful
reservoir
river
scenery
seep
sluice
station
stream
technology
thresholds
travel
view
wastewater
water
waterfall
waterworks
weir
white