n.向上的一击,向右上挑的笔迹,上冲程
an upsurge in violent crime
暴力犯罪的猛增
A new upsurge in construction is in the making.
一个建设的新高潮正在兴起.
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.