英文關鍵字
beautiful
brook
cascade
cataract
christmas
clear
close
cold
cool
creek
crystal
current
december
environment
fall
flow
flowing
fluid
forest
fresh
frost
frozen
ice
icicle
nature
outdoor
park
rapid
rapids
river
run
season
seasonal
snow
splash
stream
sunlight
sunny
sunshine
water
waterfall
wet
white
wild
winter
wintertime
wonderful