protomycin

例句：

1. 1. Protomycin is a powerful antibiotic that can kill bacteria.
   原核霉素是一种强大的抗生素，可以杀死细菌。
2. 2. The researchers used protomycin to study the effects of antibiotics on the human body.
   研究人员使用原核霉素来研究抗生素对人体的影响。
3. 3. Protomycin is often used in hospitals to treat infections caused by bacteria.
   原核霉素常用于医院治疗由细菌引起的感染。