seismically quiet地震平静
seismically active地震活动
seismically disturbed地震扰动
seismically quiescent地震平静
seismically precursory anomaly地震前兆异常
seismically active areas地震活动区
seismically active period地震活跃幕
seismically quiet area地震平静区
5th seismically active period第五地震活跃期