英文關鍵字
burns
construction
crafts
craftsman
danger
detail
equipment
factory
fire
firmness
flash
fresh
greenhouse
guy
industrial
industry
iron
job
joint
labor
laborer
light
man
manufacture
manufacturing
metal
overalls
people
poverty
protection
red
safety
scene
skil
skill
skilled
spark
steel
technical
technology
torch
water
weld
welder
welding
work