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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Although creating raw materials for biofuels is not this company's only objective (paper pulp and timber are others), it sees such fuels as a big market.

尽管创造生物燃料的原材料并不是这家公司的唯一目标(他们还生产纸浆和木材)，ArborGen仍将燃料当作一个大市场。

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Objective to use raw apple pulp as major material to study the technology and formula of apple beverage.

目的以苹果原浆为主要原料，研究制作苹果果肉饮料的工艺和配方。

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It produces pulp from raw wood, but also boasts state-of-the-art machines to make the speciality papers that constitute most of its production.

ECONOMIST: Why paper making is becoming less volatile