英文關鍵字
river
flow
tree
trunk
overgrown
old
moss
natural
nature
clean
wild
green
bottom
landscape
forest
travel
outdoor
summer
transparent
flowing
water
beautiful
slow
stream
background
sunny
bank
spring
freshwater
fresh
environment
beauty
creek
wood
grass
impetuous
current
rapids
motion
leaf
turbulent
clear
ecology
speed
watercourse
run
sandy
ecological
light