英文關鍵字
break
cascade
concrete
construction
current
dam
danger
dike
dramatic
ecology
electric
energy
engineering
environment
exciting
falls
flood
flowing
foam
force
hydro
hydroelectric
industrial
lake
motion
mountain
outdoors
overflow
park
plant
powerful
raging
reservoir
river
spillway
spring
station
storm
stream
strong
supply
technology
turbulent
wall
water
waterfall
wave
weather
wet
white