bacteria prospecting

例句：

1. 1.Bacteria are microscopic organisms that can cause diseases.
   细菌是微小的微生物，可以引起疾病。
2. 2.The bacteria in the soil can contaminate food and water.
   土壤中的细菌可以污染食物和水。
3. 3.Researchers have found new ways to control bacteria in hospitals.
   研究人员已经找到了控制医院中细菌的新方法。