gastratrophia

例句：

1. 1.The gastropods are a group of small invertebrates that live in the sea.
   水生无脊椎动物，包括许多种类的贝类。
2. 2. The gastropoda are a diverse group of animals that include snails and clams.
   甲壳类动物是一类多样性的动物，包括蜗牛和蛤蜊。
3. 3.The gastropods play an important role in the ecosystem by decomposing organic matter.
   甲壳类动物通过分解有机物质在生态系统中起着重要作用。