英文關鍵字
close-up
sharpening
knife
spinning
grindstone
slow
motion
stone
handle
closeup
blade
acute
vintage
hone
skill
sharp
sparkle
master
device
sharpener
workshop
grinder
tool
rubbing
grinding
holding
handicraft
hand
machine
abrasive
isolated
minimal
staff
rotation
round
process
craft
steel
processing
professional
technology
equipment
metal
sharpen
service