英文關鍵字
adult
bark
branch
branches
cut
day
dirty
ecology
equipment
firewood
forest
grass
green
guy
handsome
hard
industrial
industry
log
logs
lumber
machine
man
material
muscular
nature
object
one
outdoors
pile
saw
stow
strength
strong
summer
sun
sunny
timber
tool
tractor
tree
trunk
warm
wood
wooden
work
worker