英文關鍵字
across
autumn
calm
clear
cloudless
current
dark
desolate
environment
fall
flow
flowing
forest
gloomy
glum
green
landscape
mount
mountain
natural
oregon
outdoors
overcast
plants
purity
recreation
refreshing
river
rock
scenery
scenic
serene
sky
snow
spring
springtime
stone
stream
sunshine
surface
tide
tranquil
tree
trend
trunk
water
winter
wood