cordoning off

There was still a heavy police presence on campus Friday night, with police tape cordoning off the main entrance to the university.

在星期五晚上仍有大量的警力在现场，进入学校的主要通道也被封锁了。

Photos from the scene show police cordoning off the street and emergency responders carrying out the injured on stretchers.

现场画面为警察封锁街道，紧急应对人员用担架抬出伤者。

Because it was outside the Civil Guard office, [police] were there straight away, cordoning off the road and moving people out of the way.

由于爆炸发生在首府警卫队办公厅外，警察马上就抵达现场，负责封锁交通和疏散人群。