Here's Herman Pontzer, professor of evolutionary anthropology at Duke University, speaking with BBC World Service programme, CrowdScience.

下面是杜克大学进化人类学教授赫尔曼·庞泽向BBC全球服务节目《大众科学》谈到的。

Ponser is a professor of evolutionary anthropology and global health.

庞瑟博士是进化人类学和全球健康学教授。

Dr Dunbar, a professor of evolutionary anthropology with a study in this week's science section (see article), is best known for “Dunbar's number”, the limit to the number of people with whom one can maintain stable social relationships.

邓巴博士是进化人类学的教授，本期科学专栏刊登了一篇他的研究，令他广为人知的是“邓巴数字”，即一个人最多可以拥有的稳定社交关系的人数。