siliceous sediment

例句：

1. 1. The river is rich in siliceous sediment, which makes it difficult to navigate.
   这条河富含硅质沉积物，使得航行非常困难。
2. 2.Siliceous sediment can be found in many marine environments, including coral reefs.
   硅质沉积物可以在许多海洋环境中找到，包括珊瑚礁。
3. 3. The study of siliceous sediment provides valuable insights into the evolution of life on Earth.
   研究硅质沉积物为了解地球上生命演化提供了宝贵的见解。