英文關鍵字
slow
slowmotion
welder
metal
welding
industrial
factory
steel
worker
equipment
manufacturing
industry
fire
safety
weld
mask
man
arc
work
iron
metalwork
tool
spark
making
skills
welds
alloys
electrode
angle
fabrication
heats
hots
craftsman
skilled
laborer
technologies
electricities
lights
maintenance
occupation
metallic
assembly
build
shield
join
danger
glove
burnings
industrials
motion
working
machine
workshop
sparks
fly
piece
different
directions
male
hand
rack