feeling of asphyxia

例句：

1. 1.He was in a state of asphyxia after the accident.
   事故发生后，他处于窒息状态。
2. 2. The patient's conditionworsened to the point of asphyxia.
   患者的病情恶化到了需要紧急救治的地步。
3. 3. During the long flight, she hadto endure several episodes of asphyxia.
   长途飞行中，她不得不忍受几次呼吸困难的发作。