It is hard to imagine modern life without the iron, steel, cement, chemicals and everyday plastics produced by heavy industries. According to World Steel Association estimates, the iron and steel sector accounts for between 7 and 9 per cent of man-made CO₂ emissions globally. A further 8 per cent comes from cement making, and the chemicals sector is the third-largest for direct carbon emissions, the International Energy Agency has found.
人們很難想像沒有重工業生產的鋼鐵、水泥、化學品和日常塑膠的現代生活。根據世界鋼鐵協會(World Steel Association)的估計，鋼鐵行業佔全球人爲二氧化碳排放量的7%至9%。國際能源署發現，還有8%來自水泥生產，而化工行業是直接碳排放的第三大行業。
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