Arthrobacter

例句：

1. 1. The bacteria in the soil are essential for plant growth.
   土壤中的细菌对植物生长至关重要。
2. 2. Bacteria play a crucial role in maintaining the balance of ecosystems.
   细菌在维持生态系统平衡中起着关键作用。
3. 3. Researchers have found that certain bacteria can help treat cancer.
   研究人员发现某些细菌可以帮助治疗癌症。