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