cerebral ischemia

例句：

1. 1.He suffered a stroke and has been in a coma ever since.
   他患了中风，自那以后一直处于昏迷状态。
2. 2.The patient was rushed to the hospital for emergency treatment.
   病人被紧急送往医院接受治疗。
3. 3.Doctors are trying to find a cure for this rare condition.
   医生们正试图找到这种罕见病症的治疗方法。