原材料引用(Materials) CPR keeps blood and oxygen flowing to the heart and bra...

原材料引用(Materials) This is the VOA Special English Health Report. [ðɪs] [ɪ...

原材料引用(Materials) CPR combines breathing into the victim's mouth and repe...

原材料引用(Materials) Without lifesaving measures, the brain starts to die wi...

原材料引用(Materials) The heart stops pumping blood, the person stops breathi...

原材料引用(Materials) The condition is called cardiac arrest. [ðə] [kənˈdɪʃən...

原材料引用(Materials) Cardiopulmonary resuscitation, or CPR, can save the lif...

原材料引用(Materials) This is the VOA Special English Health Report. 信息与事实(Fa...