失业现象席卷全国。
272例龙卷风在本月初席卷全国——已经打破了四月份的龙卷风案例。
272 tornadoes swept the nation in the first half of this month – already breaking the all-time twister-count for April.
这个城市的问题是正在席卷全国的这场危机的征兆。
The city's problems are symptomatic of the crisis that is spreading throughout the country.
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