When buying metal gutters, choose the thickest metal available and look for primary or virgin materials.

当购置金属水槽，最厚地金属可供选择，并等待为小学或原生资料。

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But the most effective policy would be to incorporate the costs of the pollution caused by gathering and processing virgin materials into their prices.

不过，把收集与加工原始生产材料所产生的污染成本计算到总成本中，才是最有效的措施。

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At the moment, it is often cheaper to process virgin materials, despite the extra energy required, because collecting and sorting recyclables is so labour-intensive.

目前，尽管原材料加工需要额外的能源，但往往很便宜，因为回收时收集和分类需要更多劳动力。

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We also reduce or avoid the environmental impacts of using virgin materials.

WHITEHOUSE: Presidential Proclamation -- America Recycles Day, 2012

Energy saved using recycled materials versus virgin materials is up to 65%.

FORBES: Recycling Fiber (Paper)...The Basics...

At the ceremony Boeing affirmed that the virgin test flight of the world's first big airliner to be made largely of composite materials, rather than aluminium, would take place by the end of June.

ECONOMIST: Boeing and the 787