三、防余震余震出现在主震以后,虽然能量不及前面的大地震,但叠加起来,经过多次打击的建筑物可能就承受不住。主震后的第一次余震什么时候到来,是没有规律的,所以主震后仍然不能掉以轻心。余震一般较主震弱,但也足以造成进一步损害,并使建筑物更脆弱。除非警方、消防队或救援组织请求你提供协 Third, anti-aftershocks aftershocks appear in the main shock, though less powerful than the previous earthquake, but stacked up, after repeated attacks on the building may not be able to withstand. After the main shock after the first aftershock, there is no law, so after the main shock can not be taken lightly. Aftershocks are generally weaker than the main shock, but they are enough to cause further damage and make the building more vulnerable. Unless the police, fire department or rescue organization asks you for assistance