Archaeologists have unearthed evidence of glass - working and bone - carving workshops.
考古学家已发现了玻璃作坊和骨雕作坊的证据.
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A very special form of art is bone carving.
骨雕有非常特殊的形状.
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The main materials for bone carving are yak bones and buffalo bones.
骨雕的原料主要是牦牛骨和水牛骨.
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