cordon sth off翻译
be cordon off布置警戒线戒严
cordon off the scene用警戒线隔离现场
同义词：rope inrope off
PHRASAL VERB（动词词组） If police or soldiers cordon off an area, they prevent people from entering or leaving an area. 封锁
Police cordoned off part of the city centre.
警察封锁了市中心的部分地区。