v.颠簸( plunge的过去式和过去分词 );暴跌;骤降;突降;
例句:
Shares have plunged from £17 to £7.55.
股票已从17英镑骤跌至7.55英镑。
At least 50 people died when a bus plunged into a river.
一辆公共汽车栽进河里,造成至少50人丧生。
A young man plunged from a sheer rock face to his death.
一名男青年从陡峭的岩壁上坠崖身亡。