英文關鍵字
barrier
dam
day
electricity
environment
fall
flood
floodgates
flowing
flows
flushing
forest
lake
lakes
landscape
made
manmade
metal
motion
natural
nature
object
outdoors
overflowing
pond
reflection
reservoir
river
rivers
rocks
scene
scenics
shadow
small
softness
spillway
splashing
spring
stone
stream
surface
tranquil
water