英文關鍵字
background
blue
bright
burn
circular
close
construction
craft
cut
cuts
cutting
danger
dangerous
details
electric
energy
equipment
factory
fire
flame
flash
garage
gas
glow
grinder
heat
hot
industrial
industry
iron
job
light
machine
machines
man
manufacture
manufacturing
metal
molten
motion
orange
oxygen
pipe
power
powerful
production
propane
protection
red
repair
rod
slow
spark
sparks
steel
technical
technology
tools
torch
view
weld
welding
work
worker
workshop