Gouge marks in animal bones suggest human ancestors used stones to cut meat 3.4m years ago. Photograph: Dikika Research Project/PA
动物骨头上的凿痕表明，人类祖先在340万年以前就开始使用石头去切割肉类。
Gouge marks in animal bones suggest human ancestors used stones to cut meat 3.4m years ago. Photograph: Dikika Research Project/PA
动物骨头上的凿痕表明，人类祖先在340万年以前就开始使用石头去切割肉类。
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