时常会有一阵子哮吼性咳嗽。
那寂静是种强烈的哮吼。
水平从枯萎到哮吼。
哮吼通常是由病毒感染，可结果许多不同的病毒。
Croup is usually caused by a viral infection, and can be the result of a number of different viruses.
在大多数情况下，小儿病毒性哮吼收回后数天，并要求没有任何医学治疗。
In most cases, children with viral croup recover after several days and require no medical treatment.
在大多数情况下，小儿病毒性哮吼收回后数天，并要求没有任何医学治疗。
In most cases, children with viral croup recover after several days and require no medical treatment.
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