demethyltetracycline

例句：

1. 1. This antibioticis effective against many types of bacteria.
   这种抗生素对许多类型的细菌都有效。
2. 2.Demethyltetracycline is commonly used to treat infections in animals.
   去甲四环素常用于治疗动物的感染。
3. 3.The treatment for this condition requires the use of demethyltetracycline.
   这种病症的治疗需要使用去甲四环素。