secondary asphyxia

例句：

1. 1. The patient was in a coma due to secondary asphyxia caused by the accident.
   由于事故导致的次级窒息，病人处于昏迷状态。
2. 2. The child's breathing stopped due to secondary asphyxia, and he needed immediate medical attention.
   孩子因次级窒息而停止呼吸，需要立即医疗救助。
3. 3. The firefighters were called to the scene because of secondary asphyxia caused by the smoke.
   消防员被召至现场是因为烟雾引起的次级窒息。