英文關鍵字
abstract
beach
blue
brook
cascade
clean
clear
close
coast
creek
crystal
fall
flow
flowing
flows
forest
freshwater
green
lake
landscape
motion
mountain
natural
nature
ocean
park
pebble
rapid
river
rock
rocks
sand
sea
spring
stone
stones
stream
summer
water
waterfall
wave
wet
white
winter