For a normalearthquake this is when rock snaps, or rock grinds along a fault line, or rock layers drop or heave.
对于一个正常的地震,这是当岩石扣,或岩石研磨沿着断层线,或岩石层下降或隆起。
2
Following normal operation, the reservoir's level dropped as water was released downstream during the winter and early spring 2008 and was at a low level when the Wenchuan earthquake occurred.
Following normal operation, the reservoir's level dropped aswater was released downstream during the winter and early spring2008 and was at a low level when the Wenchuan earthquake occurred.