Brachyura

例句：

1. 1. The brachyurids are a group of small,flat-bodied insects that feedon plant material.
   短尾虫是一类小型扁平的昆虫，以植物材料为食。
2. 2. The brachyurids are foundin various habitats, including forestsand grasslands.
   短尾虫分布在各种生境中，包括森林和草原。
3. 3. Thebrachyurids play an important rolein the ecosystem by decomposingorganic matter and providing nutrients for other organisms.
   短尾虫在生态系统中起着重要作用，通过分解有机物质并为其他生物提供养分。