vt.封锁,用警戒线围住
n.警戒线,绶带,饰带
I took a cordon bleu cookery course.
我上了高级烹饪课程。
Protesters tried to break through a police cordon.
抗议者们试图冲破警察的封锁线。
Police formed a cordon between the two crowds.
警察在两群人之间筑起了一道封锁线。