简单说就是正常情况下得花费几千年才能完成的地壳活动被压缩到了仅几天的时间里去完成。
Basically, Tectonic activity that would normally take many thousands of years got compressed into a few short days.
地面沉降是在自然和人为因素作用下，由于地壳表层土体压缩而导致区域性地面标高降低的一种环境地质灾害现象，是一种难以补偿的永久性环境和资源损失。
Caused by the natural and man-made factors, the ground subsidence is the disaster phenomenon of environmental geology with regionally ground level decreasing, which resulted in the compact of soil.
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