英文關鍵字
adjustment
alloy
arc
art
automobile
background
bright
broken
car
construction
craftsman
cutting
design
electric
equipment
factory
fire
fix
fixing
gas
gloves
hand
heat
industry
iron
labor
making
man
max
mechanic
metal
part
protection
repair
spark
sparks
steel
technology
tool
truck
vintage
weld
welder
welding
wheel
work
worker
workshop