In the journal Science, Kim Hill and others point to evidence that people in hunter-gatherer societies actually live with people who are not relatives.
在《科学》杂志,吉姆·希尔等人搜集证据证明,人类在狩猎社会实际上同与自己无亲属关系的人居住在一起。
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"We thought Lucy was the find of the century but, in retrospect, it isn't, " palaeontologist Andrew Hill at Yale University told Science. "It's worth the wait."