英文關鍵字
abrasive
adult
blacksmith
blade
building
cut
cutter
engineer
equipment
eyeglasses
factory
fire
flame
glasses
glow
goggles
hot
industrial
industry
iron
ironworks
job
light
male
man
manual
manufacture
manufacturing
metal
metalwork
orange
plasma
plasmacore
plasmatron
power
production
protective
safety
spark
sparks
spectacles
steel
technical
technology
tool
welding
work
worker
workshop