This may be evolution's way of ensuring more constant care for a baby that is more dependent and demanding than any other newborn in the animal kingdom.

这可能是进化的手段，以确保动物王国那些比其他新生儿更具依赖性，需求更多的婴儿能得到更长久的照顾。

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After all, outside of sappy Disney movies involving comically deformed elephants, what other animal parent takes the time to give each of its newborn members its own permanent moniker?

毕竟，除了在迪士尼电影里有滑稽可爱造型的大象，哪里还有别的动物家长给自己的新出生的孩子一一地起昵称呢？

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Using an animal model, the researchers found less division and differentiation of the neural stem cells of a newborn with low birth weight as compared to normal birth weight.

用一个动物模型，研究者发现：与正常出生体重的新生儿对比，低出生体重儿的神经干细胞更少分支和分化。

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