英文關鍵字
adult
birch
blade
chain
chainsaw
circular
cut
engine
equipment
firewood
forest
forestry
fuel
garden
ground
heap
industrial
industry
lumber
lumberjack
lying
machine
male
man
nature
one
orange
outdoors
petrol
power
professional
sawdust
steel
stem
stump
technology
thick
timber
tool
tree
trunk
wood
woodcutter
wooden
woodwork
work
working