systematic infection

例句：

1. 1. The patient developed asystemic infection after surgery.
   这名患者在手术后患上了系统性感染。
2. 2. The doctor prescribed antibioticsto treat the patient's systemicinfection.
   医生给患者开了抗生素来治疗系统性感染。
3. 3. The researcher discovered a new mechanismthat could prevent systemic infections.
   研究者发现了一种新的机制，可以预防系统性感染。