如果没有回应的话，你需要确定他们是死了还是仅仅是晕过去了，虽然有时是很难分辨清楚。
Open the airway by placing one hand on their forehead and gently tilting the head back while lifting the chin.
把一只手放在他们的前额慢慢的把头向后倾，同时抬高下颚以确保呼吸顺畅。
If there are no signs of life - no obvious pulse and their chest is not going up and down - call an ambulance and then start cardiopulmonary resuscitation (CPR) to maintain a flow of oxygenated blood to the brain and heart.
如果没有明显的脉搏和心脏跳动，那就是没有生命迹象了。此时要立刻叫救护车并开始心脏救援以保持充了氧气的血液在大脑和心脏之间流通。