历史断层，读音li shi duan ceng，汉语词语，释义为在所知的历史中有些时间段没有历史记载或记载很模糊。
然而存在着潜在的危险。汉旺镇地处龙门山断层带，历史上曾经发生过破坏性极强的地震。
However, the hidden danger was already there: Hanwang town is lying on the Longmenshan Fault, an area that has experienced damaging earthquakes in the past.
海地是在断层带上，历史上海地也经历过大地震，而且预期会有更多的地震。
Haiti is on a fault line which has historically sustained large quakes, and can expect more.
重新定位结果为利用现今小震的群体特征研究历史大震的震源断层提供了良好的基础资料。
It provides fine foundational ata for the study of focal fault of historical strong earthquakes with the group feature of present small earthquakes.
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