For individuals, a trip on a plane, the use of air conditioning, writing on a piece of paper, even sending an E-mail will produce carbon footprint.
对于个人，在飞机上旅行，使用空调，在一张纸上写，甚至发送一个电子邮件将产生碳足迹。
For individuals, a trip on a plane, the use of air conditioning, writing on a piece of paper, even sending an E-mail will produce carbon footprint.
对于个人，在飞机上旅行，使用空调，在一张纸上写，甚至发送一个电子邮件将产生碳足迹。
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