总的来看，研究结果似乎表明，准确判定两个较小数字的大小的能力以及估计出两个较大数字的大小的能力，可以在动物进化历程中追溯到很久以前。
Together, the results suggest that the two abilities - to precisely identify small Numbers and to estimate the relative size of large Numbers - have deep roots in our evolutionary history.
总的来看，研究结果似乎表明，准确判定两个较小数字的大小的能力以及估计出两个较大数字的大小的能力，可以在动物进化历程中追溯到很久以前。
Together, the results suggest that the two abilities - to precisely identify small Numbers and to estimate the relative size of large Numbers - have deep roots in our evolutionary history.
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