fore-shock

英['fɔːrʃ'ɒk] 美['fɔːrʃ'ɒk]
  • n.前震
  • fore adj.在前的n.前头;船头
  • pumping n.抽吸;脉动动词pump的现在分词.
名词 foreshock:
  1. a tremor preceding an earthquake