seismic

柯林斯詞典

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. 地震産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(lái)沒(méi)有見(jiàn)過(guò)公衆(zhòng)輿論在這麼短的時(shí)間內(nèi)發(fā)生如此突然的轉(zhuǎn)變。