英文關鍵字
altai
background
bed
blue
bottom
change
channel
current
day
drop
edge
environment
fast
flowing
foam
ice
icicle
landscape
melting
motion
movement
nature
nobody
outdoors
pond
purity
raging
rapid
river
riverbank
russia
snow
splash
spring
stream
surface
texture
tide
transparent
ursul
water
wave