pellagral

例句：

1. 1. He was diagnosed with pneumonia and treated for it.
   他被诊断出患有肺炎并接受了治疗。
2. 2. The patient had a severe case of pneumonia and required hospitalization.
   这位病人患有严重的肺炎，需要住院治疗。
3. 3. Pneumonia is a common cause of chest pain and fever in young children.
   肺炎是儿童常见的引起胸痛和发热的原因。