英文關鍵字
adult
blade
branch
chain
chainsaw
construction
cut
cutting
danger
dangerous
dust
ecological
ecology
equipment
fallen
firewood
forest
forester
illegal
industry
log
logger
lumber
lumberman
man
natural
outdoors
person
pine
plant
poacher
power
protection
saw
sawdust
sawing
spruce
technology
timber
tool
tree
trunk
wood
woodcutter
wooden
work
worker