An increase in foreshock activity triggered the evacuation warning.
前震活动的增加引发了疏散警报。
What is the probability that an earthquake a foreshock to a larger earthquake ?
一个地震作为另一个较大得震的前震的概率有多大?
What is the probability that an earthquake is a foreshock to a larger earthquake ?
一场地震是一场更大地震前震的概率有多大?
No foreshock emerged before the earthquake, and its aftershock kept up for a long time.
此次地震没有明显的前震，并且余震连续不断地发生。
This paper discusses the intensity of the earthquake sequences, which include the foreshock, main shock and aftershock.
本文讨论了地震序列中前震，主震和余震的烈度。
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