动物的粪便可以作为肥料使用。

Animal dung may be used as manure.

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由城市公园收集来的树叶及其他有机物组成的混合物将作为肥料使用。

Compost made from leaves and other organic material collected from city parks will serve as fertilizer.

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从一个湖中收集的泥土和花粉样本显示，作为肥料使用的骆驼粪便帮助古代印加人从狩猎聚会过渡到耕种。

Samples of mud and pollen taken from a lake suggest llama dung, used as fertilizer, helped the ancient people of the Andes make the transition from hunter-gathering to farming.

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