英文關鍵字
muddy
mountain
rough
river
fast
current
water
rapid
flow
mudflow
landscape
brown
danger
caucasus
contaminate
contamination
creek
deluge
dirty
disaster
rock
karelia
nature
clean
ecology
environment
ferocious
flood
flooding
craggy
flowing
flux
melting
natural
overflowing
powerful
precipitation
raging
rushing
spillway
stormy
stream
torrent
turbid
waves
stone
beautiful