penicillin K

例句：

1. 1. The doctor prescribed penicillin K for her infection.
   医生给她开了青霉素K来治疗感染。
2. 2.Penicillin K is an effective treatment for many bacterial infections.
   青霉素K对许多细菌性感染都有效。
3. 3. During the epidemic, penicillin K was a lifeline for patients recovering from pneumonia.
   在流行病期间，青霉素K是那些从肺炎中恢复的患者的生命线。