algal bound sand flat

例句：

1. 1.Algae are a type of green plant that can be found in oceans and lakes.
   藻类是一种可以在海洋和湖泊中找到的绿色植物。
2. 2. The algaes are used as food for humans and animals.
   藻类被用作人类和动物的食物。
3. 3.The algaes play an important role in the ecosystem by absorbing carbon dioxide.
   藻类在生态系统中起着重要的作用，通过吸收二氧化碳。