英文關鍵字
aluminum
attention
blacksmith
bright
casting
crucible
disease
element
explosion
explosive
factory
fer
fire
flame
forge
foundry
hard
heat
hot
illness
industrial
industry
iron
labor
lava
liquid
machinery
manufacture
mechanical
melted
metal
metallurgy
molten
motion
occupation
occupational
ore
pouring
production
protection
refinery
rum
safety
security
serious
slow
spark
sparkles
steam
temperature
war
weapons
work