Sifangtai Formation

例句：

1. 1.The Sifangtai Formation is a key component of the Earth's crust.
   硅方台组是地球地壳的关键组成部分。
2. 2.The discovery of this formation has sparked debate over its age and origins.
   这一组的发现引发了关于其年龄和起源的辩论。
3. 3. The Sifangtai Formation is believed to have formed millions of years ago.
   人们认为硅方台组在数百万年前形成。