prehistorical

例句：

1. 1.The discovery of the lost city has sparked a debate about its prehistorical origins.
   关于这座失落城市的发现引发了一场关于其史前起源的辩论。
2. 2.The prehistorical cave paintings are still studied by archaeologists today.
   今天的考古学家仍在研究这些史前的洞穴绘画。
3. 3.Prehistorical tools were used to hunt and gather resources in ancient societies.
   在古代社会中，人们使用史前的器具来狩猎和采集资源。