极具震撼力的前卫摇滚 Day Eleven - Sleepwalkers
三年前的地震 Three year ago earthquakes ; Three years ago an earthquake
地震的前兆 premonitory symptoms of an earthquake ; portents of earthquake
泛指避震前叉的外管 Lower Tubes
寂静的前震 quiescent fore shock
结果表明，震前的地震活动性表现出一定的异常。
The results show that there are some anomalies in seismicities before the earthquake.
在震前的一次会议上，一些成员使公众确信没有任何的危险。
Following a committee meeting just a week before the quake, some members of the group assured the public that they were in no danger.
做好震前的准备工作是提高风险管理水平、保证震后应急工作有效性的重要因素。
Doing well preparing work before earthquake strikes is an important factor for advancing level of risk management and ensuring validity of post-disaster emergency.
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