英文關鍵字
agricultural
blade
button
circle
closeup
craft
cut
device
emery
equipment
fabric
fabrication
form
friction
gloves
grind
grinding
heavy
hoe
implement
industrial
industry
iron
knife
machine
machinery
manufacturing
mechanic
metal
power
profession
professional
safety
sandpaper
sharpen
sharpener
sharpening
sparkles
sparks
steel
switch
tool
tradition
traditional
turner
wheel
wooden
worker
workers
workshop