Boyd 's research shows the close relationship between toolmaking advances and population size .

博伊德的研究显示了工具制造技术提高与人口规模增大之间的密切关系。

But archaeologists have discovered a flute and have tested their toolmaking skills , suggesting a higher level of sophistication than first thought .

但是人类学家曾发现一只笛状物，并测验了尼安德特人的工具制造技艺，结果显示尼安德特人的社会复杂程度要比原先想象的高。

Her profound scientific discoveries-such as the discovery of toolmaking by chimpanzees-laid the foundation for all future primate studies .

她那傲人的发现，例如黑猩猩可制作工具，为后来所有的灵长类动物研究奠定了基础。

A marked increase in the number of sweat glands and a reduction in body hair could have provided that , jablonski speculates , in turn allowing for further brain growth as homo began to use those bigger brains for toolmaking , planning , and other cognitively challenging activities .

亚布隆斯基推测说，汗腺数量的急剧增加和体毛的减少可能为此提供了条件，继而使脑部进一步增大，因为容积更大的大脑使人类得以开始进行制造工具、筹划行动和其他富有挑战性的认知活动。