周末期间，我们经历了气温的骤降。

Over the weekend, we experienced ___a ___sharp ___drop in temperature.

最近的疫情暴发导致了流感病例的激增。

The recent outbreak led to ___a ___sharp ___increase in flu cases.

政策改变后，申请数量急剧上升。

After the policy change, there was ___a ___sharp ___rise in applications.