Definition: a large increase in something Level: C1
政府报告称上个季度支出激增。
The government reported a ___surge in spending last quarter.
在科技行业，最近创新激增。
In the tech industry, there has been a ___surge of innovation recently.
需求的突然激增让公司措手不及。
The sudden ___surge in demand caught the company by surprise.
