英文關鍵字
abstract
agricultural
background
bark
blue
brown
burn
circle
countryside
cut
development
energy
environment
finland
fire
firewood
forest
forestry
fuel
hardwood
heap
industrial
industry
log
logging
lumber
manufacturing
material
natural
nature
pile
raw
renewable
resource
rural
sawmaterial
sky
stack
stacked
sustainable
texture
timber
traditional
tree
trunk
wood
wooden
woodpile
yellow