up,向上，surge,浪涌。引申义激增。

1. an upsurge in violent crime

暴力犯罪的猛增

来自《权威词典》

2. There has been a recent upsurge of violence in the area.

近日应该应该该地区暴力事件急增.

来自《简明英汉词典》

3. A new upsurge in construction is in the making.

一个建设的新高潮正在兴起.

来自《现代汉英综合大词典》

4. Saudi bankers say there's been an upsurge of business confidence since the end of the war.

沙特的银行家说战后工商业界信心猛增。

来自柯林斯例句

5. But the world banking crisis coincided with a rapid upsurge of antibank feeling.

但是不巧,在发生世界性的银行危机时,反对银行的情绪也在迅速高涨.

来自名作英译部分