防疫封锁线的英文：
cordon sanitaire
n.
1. 哨兵线，非常警戒线
2.（勋章等的）绶带，饰带
v.[T]
1. 用警戒线围住（常与off连用）
The police cordoned everything off.
警察封锁了一切。
The demonstrators brpke through the cordon of the police.
示威者冲破了警察的警戒线。
Demonstrators tried to break through the police cordon.
示威群众企图突破警察的封锁线。
Demonstrators attacked police cordons with sticks and assorted missiles.
示威者用棍棒和各种投射物向警察的封锁线进攻。
Police cordoned off the area until the bomb was defused.
警方封锁了这个区域直至拆除炸弹的引信为止.