A current theory in evolutionary biology suggests that we have to be born long before we are able to look after ourselves so that our oversized heads can navigate the birth canal.

最新的进化生物学理论指出，人类不得不在还没有能力照顾自己时出生，这样才能让我们硕大的头颅顺利的通过产道。

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A current theory in evolutionary biology suggests that we have to be born long before we are able to look after ourselves so that our oversized heads can navigate the birth canal.

最新的进化生物学理论指出，人类不得不在还没有能力照顾自己时出生，这样才能让我们硕大的头颅顺利的通过产道。

youdao