级防范禁闭;
;Police officers threw a cordon around his car to protect him.
警察在他汽车周
设置了防卫圈以保护他。
；绶带；[建]束带层
；包隔离戒严；隔离Police officers threw a cordon around his car to protect him.
警察在他汽车周设置了防卫圈以保护他。
There is a tight security cordon around the area.
这
周设有严密的安全警戒圈。
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