Uralian stage

例句：

1. 1.The research on the Uralian stage has made significant progress in recent years.
   近年来，关于乌拉尔阶段的研究成果取得了显著进展。
2. 2.The Uralian stage is characterized by its unique geological features.
   乌拉尔阶段以其独特的地质特征而著称。
3. 3.The discovery of new fossils from the Uralian stage has provided valuable insights into Earth's past.
   在乌拉尔阶段发现的新化石为研究地球过去提供了宝贵的见解。