英文關鍵字
industry
coke
cooling
industrial
metallurgy
factory
smoke
closeup
pollution
smog
slowmotion
production
steam
extinguishing
fire
toxic
process
hot
workflow
gas
coking
quenching
metallurgic
environment
metal
energy
plant
modern
outside
contamination
metallurgical
pollute
manufacturing
power
chemical
chimney
technology
environmental
red