英文關鍵字
alternative
business
chop
construction
cut
deforestation
ecology
energy
environment
equipment
felled
felling
firewood
forest
forestry
fuel
harvest
harvester
harvesting
industrial
industry
landscape
log
logging
lumber
lumberjack
machine
material
modern
natural
nature
paper
pine
product
rainforest
saw
sawing
stack
summer
technology
timber
tractor
transport
tree
truck
trunk
vehicle
wood
wooden
work