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Upsurge
01
повышение
an abrupt increase in strength, number, etc.
Example
There was an unexpected upsurge in stock prices following the positive earnings report.
The city has seen an upsurge in tourism after the new amusement park opened.
The health department is concerned about the recent upsurge in flu cases this season.
02
всплеск, повышение
a sudden forceful flow
