VERB
（数量、比率或价格）骤然下跌，暴跌
If an amount, rate, or price plummets, it decreases quickly by a large amount.
例句
In Tokyo share prices have plummeted for the sixth successive day...
东京股价已连续第6天猛跌。
The Prime Minister's popularity has plummeted to an all-time low in recent weeks...
首相的支持率在近几个星期已骤跌至前所未有的低点。