英文關鍵字
agriculture
annual
arboretum
background
bark
brown
chopped
circle
color
coniferous
crack
crop
cut
deforestation
detail
environment
environmental
evergreen
felling
firewood
forest
forestry
frame
green
heap
history
life
log
logging
lumber
lumberjacking
ochre
paper
pile
piled
ring
roundwood
sawn
section
slice
stack
stacked
stump
texture
timber
tree
trunk
wood
wooden
years