In the months before, there had been a swarm of small earthquakes, along with changes in ground-water levels and the elevation of local terrain.
几个月之前，就发生了一连串小地震，伴随而来的是地下水水位和当地地形海拔的变化。
In the months before, there had been a swarm of small earthquakes, along with changes in ground-water levels and the elevation of local terrain.
几个月之前，就发生了一连串小地震，伴随而来的是地下水水位和当地地形海拔的变化。
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