long-acting terramycin

例句：

1. 1.This long-acting antibiotic will help to treat the infection.
   这种长效抗生素将有助于治疗感染。
2. 2. The doctor prescribed this long-acting antibiotic for my son's cold.
   医生为我的小孩的感冒开了这种长效抗生素。
3. 3. Long-acting antibiotics are often used in combination with other medications to treat serious infections.
   长效抗生素通常与其他药物一起使用，以治疗严重的感染。