英文關鍵字
agriculture
arm
autumn
bole
branch
chipping
chopping
climate
cutting
day
deforestation
ecology
ecosystem
environment
equipment
excavator
felled
firewood
fog
forest
forestry
fuel
harvesting
industry
landscape
light
lighting
loading
logger
logging
logs
lumber
lumberjack
machine
machinery
material
mechanical
mechanization
mist
misty
natural
nature
overthrow
processing
saw
sun
tractor
trailer
tree
trees
trunk
winter
wood
wooden
woodland