Lachnospira

例句：

1. 1.The earthworm helps to break down organic matter in the soil.
   蚯蚓有助于土壤中有机物质的分解。
2. 2. The earthworm is a natural decomposer that plays an important role in the ecosystem.
   蚯蚓是一种自然分解者，在生态系统中起着重要作用。
3. 3. The earthworm's burrowing activities help to improve soil structure and fertility.
   蚯蚓的挖掘活动有助于改善土壤结构并提高肥力。