These primitive weapons, though crude, are fatal.

这些原始武器虽然简陋，却足以致命。

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They used primitive weapons made mostly of wood and bone .

他们的武器相当原始，主要是木材与骨头。

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Primitive as these weapons may have been, they gave early humans a huge advantage in hunting for calorie-rich meat and for defending themselves from predators or other humans.

尽管原始，这些武器给了早期人类一个巨大的优势，借此获得热量丰富的猎物，保卫自己免受食肉动物或其他人的攻击。

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