n. a steep and rapid fall
v. dash violently or with great speed or impetuosity
v. begin with vigor
v. cause to be immersed
n. 钻进, 跳进, 跳水, 跳水池, 猛跌, 落下, 投入, 开始从事, 盲目投资
vi. 投入, 投身于, 跳进, 陷入, 下降
vt. 使投入, 使插入, 使陷入, 使遭受
1. She decided to plunge into the cold water to cool off.
她决定跳入冷水中凉快一下。
2. The stock market may plunge if there is bad news.
如果有坏消息，股票市场可能会暴跌。
3. He took a deep breath and made a plunge into the adventure.
他深吸一口气，投入到冒险中。