streptonigrin

例句：

1. 1.The streptonigrin in the medicine is effective against bacterial infections.
   这种药物中的链球菌素对细菌性感染有效。
2. 2.The patient was given a course of streptonigrin to treat his infection.
   患者接受了一系列的链球菌素治疗来治疗他的感染。
3. 3. The research team discovered a new strain of streptonigrin that could be used as an antibiotic.
   研究小组发现了一种新的链球菌素菌株，可以作为抗生素使用。