英文關鍵字
alternative
background
bark
brown
business
chop
chopped
circular
commodity
construction
crane
cut
davit
deforestation
ecology
energy
environment
firewood
forest
forestry
fuel
harvest
harvester
harvesting
industrial
industry
job
log
logging
lumber
lumberjack
machine
material
natural
nature
pine
product
rainforest
saw
source
technology
timber
tractor
tree
truck
trunk
vehicle
wood
wooden
work