英文關鍵字
knife
grinding
manual
work
production
man
knives
polishes
grinds
off
irregularities
skin
spinning
sparks
are
flying
black
blowtorch
burning
coal
craft
equipment
fire
flame
forge
forging
fork
gaz
glowing
handwork
hot
industrial
industry
iron
making
mechanic
metal
people
sharpener
steel
technician
tool
traditional
worker
workshop