upsurge

n (usu sing 通常作单数) (a) ~ (in sth) sudden increase in sth; rise 急剧增长; 上升: an upsurge in sales, costs, investments 销售额、 费用、 投资额的猛增. (b) ~ (of sth) sudden rush, esp of feeling 激发; （尤指感情的）突发: an upsurge of anger, enthusiasm, violence 愤怒、 热情、 暴力行为的爆发 * an upsurge of interest in the environment 对环境问题突然发生的兴趣.

uppish, upraise, upright, upright piano (also upright), uprightness, uprising, uproar, uproarious, uproariously, uproot, upset, upshot, upside, upside down, upside-down, upstage, upstairs, upstanding, upstart, upstream, upswing, uptake, uptight, uptown, upturn, upturned, upward, upward (also upwards / -wEdz; -wLdz/), upward mobility, upward(s), upwards, upwards of, upwind, uranium, urban, urbane, urbanely, urbanity, urbanization, urbanisation, urbanize,