adj. augural ; portentous ; precursory ; premonitory ; prophetical
并讨论了地震前兆的某些特征。
Some characteristics of earthquake anomalies were discussed.
故地壳屈曲是地震前兆的力学基础之一。
Therefore crustal buckling is one of the mechanics basis of earthquake precursor.
粗略的计算显示，任何有价值的地震预测手段，其观测的地震前兆的准确率必须达到98%以上。
Rough estimates suggest that any useful quake forecast method demands precursors that will prove correct 98 per cent of the time.
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