英文關鍵字
blue
bright
clean
clear
close
current
currents
day
earth
europe
fast
flow
flowing
force
forest
fresh
life
look
mineral
moss
mountain
natural
nature
outdoors
pebbles
pouring
pure
quick
rapids
reeds
reservation
river
rock
rocks
running
scene
shore
sparkling
stone
stones
stream
summer
through
tide
tides
transparent
unpolluted
valley
view
water
watercolor
wild
wilderness