aerugin

例句：

1. 1. The aerugin is a type of algae that grows in the ocean.
   海藻是一种生长在海洋中的藻类。
2. 2.The aerugin helps to clean up the water and prevent pollution.
   海藻有助于净化水质，防止污染。
3. 3. The aerugin is used as a food source for some marine animals.
   海藻是某些海洋动物的食物来源。