kromycin

例句：

1. 1. This medication is effective against many common bacterial infections.
   这种药物对许多常见的细菌感染有效。
2. 2. The doctor prescribed this antibiotic to treat her severe infection.
   医生开了这种抗生素来治疗她的严重感染。
3. 3. Kromycin is a type of antibiotic that is commonly used in treating urinary tract infections.
   克罗米星是一种常用的抗生素，用于治疗泌尿道感染。