"cordon" in Chinese (Simplified)
警戒线封锁线
Definition
警戒线是指由人（通常是警察或士兵）或物体组成的隔离线，用于阻止他人进入某个区域，通常出于安全考虑。也可以指建立这种屏障的行为。
Usage Notes (Chinese (Simplified))
多用于正式、安保或紧急场合，如警方、军队设立的。常见搭配：'警戒线'、'封锁区域'。不用来描述日常的绳索或物理障碍。
Examples
The police set up a cordon around the building.
警方在大楼周围设置了**警戒线**。
No one was allowed to enter the cordon.
没有人被允许进入**警戒线**内。
A cordon was placed around the accident site.
事故现场被设置了**警戒线**。
Crowds gathered outside the cordon, trying to see what was happening.
人群聚集在**警戒线**外，想看看发生了什么。
They had to cordon off the street after the fire.
火灾后他们不得不把街道**封锁**起来。
Reporters waited for hours outside the police cordon.
记者们在**警戒线**外等了好几个小时。