animal fauna的用法和樣例：
例句
- Mangrove forests replace salt marsh in tropical regions and support a rich fauna.
紅樹(shù)林在熱帶區域取代了鹽水沼澤，并且支持了豐富的動(dòng)物區系。 - Extinction and colonization account for the depauperate flora and fauna of islands when compared to the adjacent mainland.
當與鄰近大陸對照的時(shí)候，滅絕和移殖過(guò)程說(shuō)明了島嶼植物區系和動(dòng)物區系的衰亡。
