zhè / jiàn / wén / wù / de / què / qiè / nián / dài / shàng / dài / kǎo / zhuān / jiā / zhèng / zài / jì / xù / yán / jiū

这件文物的确切年代尚待考，专家正在继续研究。

The exact date of this artifact remains undetermined, and experts are continuing their research.