Some substances attack the brain stem causing a cessation of the breath so that one simply asphyxiates .

一些物质攻击脑干引起呼吸停止，并产生窒息。

Anacondas are nonvenomous constrictors , coiling their muscular bodies around captured prey and squeezing until the animal asphyxiates .

它们没有毒，捕猎时用发达的身躯缠绕住猎物一直勒到窒息。