Upsurge
01
急増, 高騰
an abrupt increase in strength, number, etc.
例
There was an unexpected upsurge in stock prices following the positive earnings report.
ポジティブな収益報告の後、株価に予期せぬ急上昇がありました。
02
a sudden, powerful, and forceful movement or flow of something
例
An upsurge of water swept through the river valley after heavy rain.
