adj.细菌的，细菌引起的

Bacteria are single-celled microorganisms that play a vital role in the ecosystem.
细菌是单细胞微生物，对生态系统起着至关重要的作用。
Antibiotics are used to treat infections caused by bacteria.
抗生素用于治疗由细菌引起的感染。
Some bacteria have developed resistance to common antibiotics, making them more difficult to treat.
一些细菌已对常见的抗生素产生抗性，使得治疗更加困难。
The human gut is home to trillions of friendly bacteria that aid in digestion.
人体肠道内居住着万亿个有助于消化的友好菌群。
Fecal transplants can help restore the balance of bacteria in the intestines.
粪便移植可以帮助恢复肠道中细菌的平衡。
Bacterial pneumonia can be life-threatening if left untreated.
如果不进行治疗，细菌性肺炎可能是致命的。
Chlorination is a common method for killing harmful bacteria in drinking water.
氯化是一种常见的杀死饮用水中有害细菌的方法。
Farmers often use antibiotics to prevent bacterial infections in livestock.
农民常使用抗生素来预防家畜的细菌感染。
The discovery of penicillin revolutionized the treatment of bacterial infections.
青霉素的发现彻底改变了细菌感染的治疗方法。
Regular hand washing is an effective way to prevent the spread of bacterial diseases.
经常洗手是防止细菌性疾病传播的有效方法。