The city set up a central recycling center for sorting recyclable materials, food-based and waste.

这个城市建立了一个中央回收中心，对可回收材料、食品和废料进行分类。

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The cost of collecting, transporting and sorting materials generally exceeds the revenues generated by selling the recyclables, and is also greater than the disposal costs.

垃圾废料收集、运输与分类的费用通常超过了售卖回收处理品所得到的财政收入，而且这些费用还远远高于直接处理这些垃圾的费用。

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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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