英文關鍵字
annicut
axle
bridge
cars
cloud
dam
day
dike
down
drop
electric
energy
environment
far
flow
high
hydro
hydroelectric
industrial
land
landscape
lantern
lapse
main
manmade
nature
open
outdoors
over
overflow
plant
pool
power
river
rural
russia
soft
spillway
station
structure
time
timelapse
togliatti
tolyatti
wall
water
waterfall
wild