plunge的解释，在云词典中plunge是什么意思？

plunge

[plʌndʒ]
n.
跳进, 投入
vi.
投入, 跳进, 陷入
vt.
使投入, 使插入, 使陷入

But promises of cooperation have gone by the wayside as the recession-ravaged states have desperately tried to stop the plunge in jobs.
受不景气打击的各州不顾一切地设法阻止工作机会的锐减，已把互相合作的承诺忘得一干二净。
He sees that human stupidity and greed are about to plunge Europe into chaos.
他看到人间的愚蠢和贪婪即将使欧洲陷入一片混乱。
I thought this kind of happiness must be trustable---just as suddenly as it had come it would collapse and plunge her into deeper despair.
我认为这种幸福是不牢靠的―就像它来得突然一样，它也会突然地破灭并使她陷入更大的失望。
I waved my dog to plunge into the water.
我挥手示意我的狗跳入水中。
Remember what my grandfather, well into his eighties, used to say every morning as he set off for his plunge into the icy Atlantic:"You’re only as old as you feel and I feel forty today! "
我那近八十高龄的祖父过去常常跳入冰冷的大西洋游水。记得他每天早上出发时都会说：“年龄跟着感觉走，我今天觉得自己才４０岁！”
Share price plummet or plunge on the news of the devaluation.
一有贬值的消息，股票价格就暴跌了。
Share price plunge as a result of the gloomy economic forecast.
该项预测展望经济前景暗淡，因而股票价格大跌。