维拉说，“这项发现非常重要，因为它表明南非人在很早以前就拥有技术精湛的石器制造技术。”
"This finding is important because it shows that humans in South Africa had a sophisticated repertoire of tool-making techniques at a very early time," said Villa.
尽管青铜器和石器还在继续被使用，但青铜在用于制造带有锋利边缘的物件方面要成功得多，这可以应用于从锯子、镰刀到武器等任何东西。
Although copper and stone tools continued to be used, bronze was far more successful in creating sharp edges that could be used as anything from saws and scythes to weapons.
他们居住于洞中，靠打猎为生，能够使用并制造简单的石器。
They lived in caves and hunted and they could use and make simple stone-made tools.
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