metamycin

例句：

1. 1. The antibiotic metamycin is effective against many types of bacteria.
   甲霉素对许多类型的细菌有效。
2. 2.The patient was given a course of metamycin to treat his infection.
   患者接受了甲霉素的治疗来治疗他的感染。
3. 3.Due to its broad spectrum of activity, metamycin is often used in combination with other antibiotics.
   由于其广泛的活性，甲霉素经常与其他抗生素一起使用。