在历史上，纺织染料是由植物和动物排泄物等天然资源制成的。
Historically, textile dyes were made from such natural sources as plants and animal excretions.
人和陆生动物排泄物含有可溶的难处理有机物质。
The excreta of humans and land animals contain soluble refractory organic matter.
工厂的废弃物将被制成堆肥，或者与动物排泄物混合，作为建筑物内的燃料。
Waste from plants will be either composted for fertilizer or will be combined with animal waste and used as a fuel within the building.
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