vagrant benthos

例句：

1. 1. The vagrant benthos is a fascinating ecosystem that hasbeen studied for decades.
   无定栖生物群落是一个令人着迷的生态系统，几十年来一直备受关注。
2. 2. Thevagrant benthosplays an important role in maintainingthe balance of the marine ecosystem.
   无定栖生物群落在维持海洋生态系统平衡方面起着重要作用。
3. 3. Thevagrant benthosis home to a diverse rangeof organisms, including fish,crustaceans, and mollusks.
   无定栖生物群落是各种生物的家园，包括鱼类、甲壳类动物和软体动物。