以欧洲移动通信运营巨头Vodafone为例，估计网络产生的排放占其总碳排放量的80%(其余的则来自与办公场所、营业场所和交通)。
For example, Vodafone, a giant European mobile operator, estimates that its network accounts for 80% of its carbon footprint (the remainder is attributed to its offices, shops and vehicles).
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