常見(jiàn)例句用作名詞 (n.)An increase in foreshock activity triggered the evacuation warning.前震活動(dòng)的增加引發(fā)了疏散警報(bào)。In the Pacific Northwest, there is no evidence of foreshock activity for most historic earthquakes.在太平洋西北地區(qū)，歷史上的大多數(shù)地震都沒(méi)有前震活動(dòng)的証據(jù)。 返回 foreshock