Strunian Age

例句：

1. 1. The discovery of fossils in the cave has revealed the strunian age of the area.
   洞穴中发现的化石揭示了该地区的石器时代。
2. 2.The researcher believes that the strunian age is crucial for understanding human evolution.
   研究者认为石器时代对于理解人类进化至关重要。
3. 3.The strunian age is characterized by the use of stone tools and implements.
   石器时代以使用石制工具和器具为特征。