Diatomaceae

例句：

1. 1. Diatomaceae is a group of organisms that are known for their unique cell structure.
   硅藻纲是一类以独特的细胞结构而闻名的生物。
2. 2.The soil in the rainforest contains a high concentration of diatomaceous earth, which helps to retain moisture.
   雨林中的土壤含有大量的硅藻土，这有助于保持水分。
3. 3. Diatomaceae is important for maintaining healthy ecosystems, as they play a crucial role in nutrient cycling.
   硅藻纲对于维持健康的生态系统至关重要，因为它们在养分循环中扮演着关键角色。