bacterial balance index

例句：

1. 1. The bacterial balance index is a crucial factor in the treatment of infectious diseases.
   细菌平衡指数是治疗传染病的关键因素。
2. 2.The bacteria in the soil play a significant role in maintaining the balance of the ecosystem.
   土壤中的细菌在维持生态系统平衡中起着重要作用。
3. 3.The bacterial balance index can be used to monitor the health of the environment and prevent the spread of disease.
   细菌平衡指数可以用来监测环境的健康状态，防止疾病的传播。