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