英文關鍵字
abrasive
accuracy
blade
closeup
electricity
equipment
grind
grinder
grinding
grinds
hand
handle
hooked
industrial
iron
job
knife
log
machine
male
man
manual
meadow
metal
occupation
outdoor
red
service
sharp
sharpen
sharpener
sharpening
shop
skill
spin
steel
stone
tone
tool
turn
turning
various
vintage
wheel
whet
whetstone
wooden
work
worker
working