1) Prices started a downward plunge.
价格开始猛跌。
2) The stock market prices plummeted
股市价格猛跌
3) The price fall suddenly(go down with a run;slump;decline heavily)
物价猛跌
4) Bear Raid
空头猛跌，大量抛空以使价格下跌
5) This brought about a heavy slump in prices.
这引起物价猛跌。
补充资料：股市
参见：股票市场