答：他们冲闯警戒线。
There is a tight security cordon around the area.
这一地区周围设有严密的安全警戒圈。
The police cordon is unable to hold back the crowd.
警方的警戒线阻挡不住人群。
The police cordon was unable to hold back the crowd.
警方的警戒线阻挡不住人群。
In the police cordon the crowd gathered outside a lot.
在警方封锁线外聚集了不少围观群众。
Police officers threw a cordon around his car to protect him.
警察在他汽车周围设置了防卫圈以保护他。
Police officers threw a cordon around his car to protect him.
警察在他汽车周围设置了防卫圈以保护他。
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