英文關鍵字
angle
bark
below
big
blue
branch
brown
canopy
clear
conifer
day
environment
foliage
forest
giant
green
greenery
growth
high
large
leaf
leaves
light
looking
low
natural
nature
nobody
nonurban
oak
old
park
pine
plant
season
sky
skyward
stem
summer
sunlight
sunny
tall
tree
treetop
trunk
upward
vertical
view
wood