1. Zooflagellates are unicellular organisms that have one or more flagella for movement.
动物鞭毛虫是一种单细胞生物，它们有一根或多根鞭毛用于移动。

2. Some zooflagellates are known to cause diseases in animals, such as African trypanosomiasis in humans.
一些动物鞭毛虫被发现会引起动物的疾病，比如人类的非洲锥虫病。