some major factors in soil formation

例句：

1. 1. The formation of the new government is still under discussion.
   新政府的组建仍在讨论中。
2. 2. The formation of the new species has been a long and arduous process.
   新物种的形成是一个漫长而艰难的过程。
3. 3.The formation of the new city is expected to bring significant economic benefits.
   新城市的建设预计将带来显著的经济效益。