seismic

1. ADJ Seismic means caused by or relating to an earthquake. 地震的; 地震引起的[ADJ n]

Earthquakes produce two types of seismic waves. 地震產(chǎn)生兩種類型的地震波。

2. ADJ A seismic shift or change is a very sudden or dramatic change. 突然的[usu ADJ n]

I have never seen such a seismic shift in public opinion in such a short period of time. 我從來沒有見過公眾輿論在這么短的時間內(nèi)發(fā)生如此突然的轉(zhuǎn)變。