英文關鍵字
abscission
aerial
autumn
bird
branch
day
defoliation
down
drone
dry
eye
fall
fir
flora
foliage
forest
ground
grove
landscape
leaf
nature
needles
nobody
outdoors
petersburg
pine
plant
rotation
russia
saint
scenic
spruce
suburban
sunlight
sunny
thicket
top
tree
trunk
vegetation
view