HSK 7-9
激增
jīzēng动
to increase rapidly; to shoot up
节日期间网上订单突然激增。
Jié rì qī jiān wǎng shàng dìng dān tū rán jī zēng.
Online orders surged during the holiday.
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Appears across levels (7-9) in the HSK 3.0 word list.