英文關鍵字
man#39aph39#s
hand
holding
paint
brush
iron
painting
work
activity
background
bucket
construction
digging
dirt
ditch
dust
energy
engine
engineering
equipment
factory
fire
flash
gas
gloves
ground
heavy
house
hydraulic
industrial
industry
security
ironwork
ironworker
light
man
manual
manufacturing
metal
production
safety
smoke
spark
sparks
black
steel
strong
technology
weld
welder
isolated
welding
worker
day
hard