英文關鍵字
confident
construction
craft
crafts
craftsman
day
detail
electro
equipment
factory
fire
flash
girders
grass
greenhouse
guy
industrial
industry
iron
job
labor
laborer
light
man
manufacture
manufacturing
metal
occupation
plant
poverty
protection
safety
scene
skill
skilled
spark
steel
street
structure
technical
technology
torch
water
weld
welder
welding
work