[countable] a sudden increase in the amount or number of sth; a large amount of sth（数量的）急剧上升，激增；大量；一大批◆ a surge in consumer spending消费开支的激增◆You need to protect your computer equipment from power surges.你需要保护自己的计算机设备，以免遭瞬间高电压损坏。  ➡  upsurge