英文關鍵字
agricultural
blade
button
circle
closeup
craft
cut
device
emery
equipment
form
friction
gloves
grind
grinder
grinding
hoe
implement
industrial
iron
knife
machine
machinery
manufacture
manufacturing
master
mechanic
metal
process
production
profession
professional
safety
sandpaper
sharpen
sharpener
sharpening
sparkle
sparks
steel
switch
table
tool
traditional
turner
wooden
work
worker
workers
workshop