If there is an upsurge in something, there is a sudden, large increase in it.
例句
...the upsurge in oil prices...油價的暴漲Saudi bankers say there's been an upsurge of business confidence since the end of the war.沙特的銀行家說戰后工商業界信心猛增。
英漢詞典釋義
n.
急劇增長;上升
an upsurge in violent crime暴力犯罪猛增an upsurge of interest in science and technology對科學技術的興趣倍增the recent upsurge in the popularity of folk music近來民間音樂的大受歡迎There has been a recent upsurge of violence in the area.近日應該應該該地區暴力事件急增。
英英詞典釋義
Noun
1. a sudden forceful flow
2. a sudden or abrupt strong increase;
"stimulated a surge of speculation""an upsurge of emotion""an upsurge in violent crime"