考古人员在遗址中发现了一个保存完好的炉坑，推测这里曾经用于冶炼铜器。
Archaeologists discovered a well-preserved furnace pit at the site and speculated that it had once been used to smelt copper vessels.
Archaeologists discovered a well-preserved furnace pit at the site and speculated that it had once been used to smelt copper vessels.