英文關鍵字
agriculture
autumn
bole
branch
chipping
chopping
climate
cutting
day
deforestation
ecology
ecosystem
environment
equipment
excavator
felled
felling
firewood
fog
foggy
forest
forestry
fuel
harvesting
industrial
industry
knocks
landscape
light
lighting
logger
logging
lumber
lumberjack
machine
machinery
machines
material
mechanization
mist
misty
modern
morning
natural
nature
operative
overthrow
processed
processing
saw
sun
tractor
tree
trees
trunk
trunks
winter
wood
wooden
woodland