plummets , plummeting , plummeted
If an amount, rate, or price plummets, it decreases quickly by a large amount.
In Tokyo share prices have plummeted for the sixth successive day.
在东京,股价已经是连续第6天暴跌了。
The president's popularity has plummeted to an all-time low in recent weeks.
总统的声望最近几周已骤然跌至前所未有的低点。