英文關鍵字
arc
build
connect
construction
craftsman
entrepreneur
fabricate
factory
fire
fix
flash
gloves
industrial
industry
job
join
labor
laborer
light
making
man
manufacture
mask
metal
naval
prefabricate
production
protection
repair
safety
skill
skilled
smoke
spark
steel
structure
technical
weld
welded
welder
welding
work
worker
workplace