刘占成还说，此次挖掘工作对目前的保存技术也是一大考验。 数十年来，西博一直致力于研究如何才能使未出土的兵马俑完好无损，确保它们能够维持原色。

Liu also said the excavation will test preservation technology that the museum has spent decades developing to keep the undiscovered terracotta figures intact and retain their original colors.

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