polychoris

例句：

1. 1. Polychaeteworms are common in marine environments.
   多孔虫在海洋环境中很常见。
2. 2. The polychaete worms were found tobe beneficial for the ecosystem.
   多孔虫被发现对生态系统有益。
3. 3. The study of polychaete worms has led tonew discoveries about marine life.
   研究多孔虫的发现有助于我们了解海洋生物的新知识。