英文關鍵字
blacksmith
connect
construction
craftsman
engineering
entrepreneur
equipment
factory
fire
flame
flash
gas
hammer
heat
helmet
industrial
industry
iron
job
join
labor
light
man
manual
manufacture
manufacturing
mask
metal
metalwork
production
protection
repair
safety
skill
skilled
smoke
solder
spark
steel
structure
technical
torch
welder
welding
work
worker
workplace
workshop