earthquakesn.地震名词earthquake的复数形式.earthquaken.地震earthquake wave effect地震波效应earthquake relief work抗震救灾工作earthquake of Wenchuan汶川地震earthquake risk region地震危险区Earthquake deformation地震变形earthquake observationn.地震观测earthquake destruction地震破坏earthquake dislocation地震位错earthquake coefficient地震系数earthquake in Wenchuan汶川地震