Zhoukoudian stage

例句：

1. 1. Thearchaeologists excavated the Zhoukoudian site in hopes of unearthing ancient Chinese civilization.
   考古学家在周口店遗址挖掘，希望发掘出古代中国文明。
2. 2. The discovery of the Zhoukoudian site has sparked a renewed interest in prehistoric human evolution.
   周口店遗址的发现重新点燃了对史前人类进化的兴趣。
3. 3. The Zhoukoudian site is considered one of the most significant archaeological discoveries of the20th century.
   周口店遗址被认为是20世纪最重要的考古发现之一。