英文關鍵字
channel
creek
dam
descent
discharge
drain
ecology
energy
engineering
fall
falls
flood
floodgate
flooding
flow
flowing
fluid
gallop
hydro
hydroelectric
industrial
industry
lake
liquid
multilayer
natural
nature
power
rain
rapid
rapids
release
river
rock
scenery
speed
spindrift
splash
spray
stormy
stream
summer
technology
torrential
turbulent
voltage
water
waterfall
wave
wet