英文關鍵字
arm
bark
branches
business
cargo
chopping
claw
crane
cut
deforestation
energy
environment
equipment
firewood
forest
forestry
green
heating
heavy
industrial
industry
lift
lifting
load
loading
log
logging
lorry
lumber
machine
machinery
materials
nature
pile
raw
sky
stack
texture
timber
traditional
transport
transportation
tree
truck
trunk
vehicle
wood
wooden
woodpile