英文關鍵字
alone
autumn
background
big
blue
branch
cloud
cloudy
country
ecology
environment
fall
field
foliage
forest
fresh
grass
green
high
landscape
large
lawn
leaf
lonely
lush
meadow
natural
nature
old
overcast
park
peaceful
plant
poplar
scene
serene
sky
stem
strength
strong
symbol
tall
timber
tree
trunk
wood
yellow