dàng / àn / xiāo / huǐ / qián / gōng / zuò / rén / yuán / xiān / jiāng / wú / bǎo / cún / jià / zhí / de / fù / běn / fù / bǐng

档案销毁前，工作人员先将无保存价值的副本付丙。

Before destroying the records, the staff burned the copies that had no archival value.