v.猛冲向，暴跌，骤降，使突然前冲(或下落)，突降，陡峭地向下倾斜，（剧烈）颠簸，震荡
n.突然跌落，突然分离，(价格、数量的)暴跌，猛降，骤减，卷入，参与，跳水

原形：plunge第三人称单数：plunges过去式：plunged过去分词：plunged现在分词：plunging

The prices started a downward plunge.
价格开始猛跌。
The monkey took a plunge into the deep water.
猴子跳入深水。
Tom's company was plunged into a debt crisis.
汤姆的公司深陷债务危机。
She plunged into the icy water to save the drowning child.
她跳入冰冷的水中去救那个溺水的孩子。
The stock market plunged dramatically after the bank crisis.
银行危机后，股市大幅下跌。
He plunged headlong into the project without any preparation.
他毫无准备地全力以赴地投入了这个项目。
The politician plunged into the crowd to shake hands with voters.
这位政治家深入人群与选民握手。
She was so absorbed in her book that she plunged straight past her bus stop.
她全神贯注在书里，以至于直接错过了她的公交站。
The hiker plunged down the steep mountain trail.
徒步旅行者沿着陡峭的山路急速下坡。
The room was plunged into darkness when the power went out.
电力中断时，房间陷入一片漆黑。
He plunged his hand into the bag and pulled out a surprise gift.
他把手伸进袋子里，掏出了一份惊喜礼物。
The athlete plunged into the swimming pool with a splash.
那名运动员扑通一声跳进了游泳池。
The journalist plunged into the investigation of the corruption scandal.
记者深入调查了这起腐败丑闻。