xiū / fù / rén / yuán / xiān / qīng / lǐ / tóng / xiù / céng / zài / bǎo / hù / wén / wù / biǎo / miàn

修复人员先清理铜锈层，再保护文物表面。

The restorers first cleaned the patina and then protected the surface of the artifact.