They passed on lighting fires, making stone tools, wearing clothes, decorating their bodies and all sorts of skills to do with living together as hunters and gatherers.
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From Making Stone Tools 源于制作石器
making stone tools
制作石器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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And scientists believe that making stone tools helped propel that evolution.
而科学家认为，制造石器帮助推进这种进化。
She studies flint-knapping — the art of making stone tools the way our ancestors did.
她研究燧石敲击术，一门我们的祖先制造石器的手艺。
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