英文關鍵字
arc
beam
clothes
clothing
construction
constructor
contractor
craftsman
equipment
fabrication
fabricator
factory
fire
flame
flaming
gloves
helmet
hot
industrial
industry
iron
job
labor
light
maintenance
manufacturing
mask
men
metal
metalwork
occupation
outdoor
person
power
protection
repair
safety
site
skill
smoke
steel
tool
uniform
weld
welder
welding
work
worker
workplace