英文關鍵字
autumn
clear
cloudless
current
dark
day
desolate
environment
fall
flow
flowing
forest
gloomy
glum
green
log
motion
mount
mountain
natural
oregon
overcast
plants
pure
river
riverbed
rock
scenic
serene
sky
snow
spring
stone
stream
sunny
surface
tranquil
tree
trend
trunk
unclouded
vines
water
waterway
wilderness
windfall
wood