flora
noun [ U ] biology specialized uk/ˈflɔː.rə/ us/ˈflɔːr.ə/
environment （某一地点或时期的）植物群
all the plants of a particular place or from a particular time in history
the flora of the Balearic Islands 巴利阿里群岛的植物群
Stone Age flora 石器时代植物群
（生活在某一动物体内的）细菌和其他生物群
all the bacteria and other organisms that live inside an animal
In the normal, healthy person the gut flora is a balanced community of different organisms. 生活在一个正常健康的人的肠道内生物群是一个平衡的群体。