Recycling also reuses valuable raw materials, such as aluminum and paper.

回收也会重复利用有价值的原材料，比如铝和纸。

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For many materials the process of turning them back into useful raw materials is straightforward: metals are shredded into pieces, paper is reduced to pulp and glass is crushed into cullet.

对许多材料而言，将它们转变为有用的原始材料的过程是非常简单的：金属物被压碎成碎片，纸被融合为纸浆而玻璃制品则被碾成玻璃碎末。

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Cuba both imports toilet paper and produces its own, but does not currently have enough raw materials to make it, he said.

他表示，古巴不仅进口卫生纸，还自己生产。但由于原料缺乏，目前已无法生产卫生纸。

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These companies are principally engaged in the business of producing raw materials, including paper or wood products, chemicals, construction materials, and mining and metals.

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Instead, it's typically a more prosaic end: humanity wiped out because an AI tasked with a simple goal (say, creating paper clips, an example that is often used) requisitions all the energy and raw materials on Earth to relentlessly churn out paper clips, outsmarting and out-maneuvering all human attempts to stop it.

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The paper industry consumes a tremendous amount of energy and raw materials: thin cardboard could cut both.

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