先兆窒息

【医】 treatened asphyxia

先兆的英语翻译：

foreboding; indication; omen; sign
【医】 aura; premonition; presymptom

窒息的英语翻译：

choke; smother; suffocate; gag; stifle; strangulate; throttle
【医】 apnea; apnoea; asphyxia; asphyxiation; stifle; suffocation