Silicoflagellatae

例句：

1. 1. The water quality in the lake is greatly improved by the presence of these diatoms.
   这些硅藻的存在极大地改善了湖泊的水质量。
2. 2. The study of algae has led to new discoveries about the origins of life on Earth.
   关于藻类的研究表明，地球上生命的起源有了新发现。
3. 3. In aquaculture, algae are used as food for fish and other aquatic organisms.
   在水产养殖中，藻类被用作鱼类和其他水生生物的食物。