Sent_en: 2zh Other regional sweeps have been conducted before; but this was the first of its kind at the national level and resulted in the highest number of arrests ever recorded in a single operation.
Sent_yy: 以前也进行过其他区域搜查；但这是第一次在国家一级进行这类行动，导致在一次行动中逮捕人数最多。