lethal zygosis

例句：

1. 1. The patient developed a lethal infection after surgery.
   这名患者在手术后患上了致命感染。
2. 2.The disease is known to be lethal for those who are not vaccinated.
   这种疾病对未接种疫苗的人来说是致命的。
3. 3.The research team discovered a new strain of bacteria that can cause lethal infestations.
   研究团队发现了一种新菌株，能引起致命感染。