Nematophyta

例句：

1. 1. The nematophyta are a group of small animals that live in soil and feed on plant roots.
   线虫纲是一类生活在土壤中，以植物根部为食的小动物。
2. 2. The nematophyta play an important role in the ecosystem by decomposing organic matter.
   线虫纲在生态系统中通过分解有机物质发挥着重要作用。
3. 3. The nematophyta have been studied for their potential use as biological pest control agents.
   线虫纲已被研究用于潜在的生物害虫控制剂。