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.
科学家认为，这些已变成化石的骨骼显示他们是人类的直系祖先，这是人们一直在寻找的存在于人猿和人类之间的过渡生物。
Scientists believe their fossilised skeletons show they could be our direct ancestors, the long-sought ‘missing link’ between apes and humans.
科学家认为，这些已变成化石的骨骼显示他们是人类的直系祖先，这是人们一直在寻找的存在于人猿和人类之间的过渡生物。
Scientists believe their fossilised skeletons show they could be our direct ancestors, the long-sought 'missing link' between apes and humans.
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