calcareous sediments造句

例句与造句

1. Calcareous sediments accumulated on a sea floor and eventually were compacted and cemented to form limestone .
   钙质沉积物堆积在海底，最后压紧并胶结形成石灰岩。
2. It's difficult to find calcareous sediments in a sentence. 用calcareous sediments造句挺难的