fossil Stromgren sphere

例句：

1. 1. Fossils are found in many different parts of the world.
   化石在世界的许多不同地方被发现。
2. 2. The discovery of a new species of dinosaur has sparked excitement among paleontologists.
   新种恐龙的发现激发了古生物学家的热情。
3. 3. Fossils provide valuable information about the past life of our planet.
   化石为我们提供了关于地球过去生命的宝贵信息。