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1·Extra-soft, quilted and multi-ply toilet roll made from virgin forest causes more damage than gas-guzzlers, fast food or McMansions, say campaigners.

用原木加工的超软，带软垫的，且多层的卫生纸比那些油高耗油汽车，快餐或者美式大房子造成的破坏还要大。

2·This paper describes the application of numerical analysis in gas emission prediction in virgin zone of a mine.

介绍了数字分析在矿井瓦斯涌出量预测中的应用。

3·The composition can further comprise a virgin polyethylene terephthalate (PET), a high gas barrier or an oxygen scavenging compound.

该组合物可以进一步包含未用过的聚对苯二甲酸乙二醇酯(PET)、高阻气剂或氧清除化合物。