激增

例句：

1. 1. The number of tourists has swelled to a staggering level.
   游客数量急剧增加到了令人震惊的水平。
2. 2. The stock price has surged by 50% in just one day.
   股票价格在一天内飙升了50%。
3. 3. The demand for this product has surged dramatically over the past year.
   这种产品的需求在过去一年内急剧上升。