penicillic acid

例句：

1. 1. Penicillic acid is a powerful antibiotic that can treat bacterial infections.
   青霉素酸是一种强效的抗生素，可以治疗细菌感染。
2. 2. The bacteria that produce penicillic acid are resistant to most antibiotics.
   产生青霉素酸的细菌对大多数抗生素具有抗药性。
3. 3.In order to prevent infection, doctors often prescribe penicillic acid for patients with weakened immune systems.
   为了预防感染，医生经常为免疫系统较弱的患者开处方青霉素酸。