英文關鍵字
nature
chute
water
stream
wood
wooden
clean
flow
fresh
river
waterfall
old
wet
natural
flowing
moss
park
outdoors
cold
splash
channel
historic
weir
landscape
gutter
cascade
environment
forest
mountain
outdoor
pool
cool
current
flume
machine
background
fountain
green
spring
stone
summer
ecology
liquid
pure
drink
tree
architecture
building
bulgaria
europe