波纹纸板与混合的纸质废料分离开来，然后对这两种纸制品分别打包并卖掉，而塑料瓶与纸箱需要工人用手选出来。
Corrugated cardboard is separated from mixed paper, both of which are then baled and sold. Plastic bottles and cartons are plucked out by hand.
将可再次利用的成分从其他废料中分离出来的能力至关重要。
The ability to separate out reusable elements from other waste is crucial.
在几年之内，通过分离纤维素(植物中含量最丰富的分子)并将其转化为简单的碳氢化合物，我们就可以将农业废料变成燃油了。
Within a few years we will be able to turn agricultural wastes into liquid fuels by splitting cellulose, the most abundant molecule in plants and trees, into simple hydrocarbons.
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