A: When an earthquake occurs, one of the first questions is "where was it?" The location may tell us what fault it was on and where damage (if any) most likely occurred.
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When an earthquake occurs, we observe The Times at which the wavefront passes each station.
当地震发生，我们会观察波经过每一个站点的所用的时间。
Because you don't know where you will be when an earthquake occurs prepare a Disaster Supplies Kit for your home workplace and car.
茵为你不知道地震发生的时候自己会在哪儿，所以，在家里、办公地点以及汽车上，都准备一套抗灾装备吧。
Because you don't know where you will be when an earthquake occurs, prepare a Disaster Supplies Kit for your home, workplace, and car.
因为你不知道地震发生的时候自己会在哪儿，所以，在家里、办公地点以及汽车上，都准备一套抗灾装备吧。
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