然而，要大幅度降低生产水泥所需要的能源消耗，或减少二氧化碳的排放量，以达到减少温室气体排放的目的，在生产工序上仍需做出很大突破。
But a process that could dramatically reduce the amount of energy it takes to produce cement or the amount of CO2 cement puts out could be a breakthrough in terms of reducing greenhouse gas emissions.
突破：一个协议达成了，减少排放量可让地球减温2摄氏度---科学家说这2度可以避免恶劣的气候变化。
Breakthrough: an agreement is reached with ambitious reduction targets to limit global warming to 2 degrees – the level scientists say will prevent dangerous climate change.
突破：一个协议达成了，减少排放量可让地球减温2摄氏度---科学家说这2度可以避免恶劣的气候变化。
Breakthrough: an agreement is reached with ambitious reduction targets to limit global warming to 2 degrees – the level scientists say will prevent dangerous climate change.
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