upsurge

Compared meaning: a sudden large increase (noun).

比较义项：突然大幅增加（名词）。

• surge

  Surge suggests a sudden, forceful and often brief rise, frequently used for physical or emotional bursts such as electricity, adrenaline or emotion, which can subside quickly.

  surge 强调突然、猛烈且往往短暂的上升，常用于电流、肾上腺素、情绪等具体或生理性的骤增，涨势可能很快回落。

  A surge of adrenaline helped her finish the last mile of the race.

  一股肾上腺素的激增帮助她跑完了比赛的最后一英里。

• upsurge 本词

  Upsurge is more formal and typically describes a marked rise in an abstract trend or statistic, such as crime or public support, without the momentary, wave-like feel of surge.

  upsurge 语气更正式，通常描述犯罪率、公众支持度等抽象趋势或统计数据的明显上升，不像 surge 那样带有波涌般的、短暂的感觉。

  The charity reported a sharp upsurge in public donations after the campaign.

  该慈善机构报告称，活动之后公众捐款出现了大幅上升。

Surge and upsurge both mean a sudden large increase. Surge suggests a forceful, often brief rise, like a wave, used for electricity, adrenaline or emotion. Upsurge is more formal, describing a marked rise in a trend or statistic, like crime, without that wave-like feeling.

surge 和 upsurge 都表示“突然的大幅增长”，但 surge 更强调具体、猛烈且往往短暂的骤增，像波涌一样先冲高后可能回落，常用于电流、肾上腺素、情绪等场合；upsurge 语气更正式，多用于描述犯罪率、支持率、需求等抽象趋势或统计数据的明显上升，不强调那种波涌起伏的感觉。