灵长类动物的研究人员,对在乌干达一保护区内半自由放养的黑猩猩研究发现只有当一个合作伙伴能帮其获得远多于它们自己所能得到的食物时，黑猩猩才会招该伙伴入伙。
Primate researchers, working with semi-free ranging chimpanzees at a sanctuary in Uganda, found chimpanzees recruit a helping partner only if it gets them more food than they’d get alone.
灵长类动物的研究人员,对在乌干达一保护区内半自由放养的黑猩猩研究发现只有当一个合作伙伴能帮其获得远多于它们自己所能得到的食物时，黑猩猩才会招该伙伴入伙。
Primate researchers, working with semi-free ranging chimpanzees at a sanctuary in Uganda, found chimpanzees recruit a helping partner only if it gets them more food than they’d get alone.
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