警けい戒かい線せん

noun

warning line; police cordon

A line or perimeter set up by authorities to restrict access, often for security or safety reasons.

• 警けい察さつは現げん場ばの周まわりに警けい戒かい線せんを張はった。

  The police set up a cordon around the scene.

• 警けい戒かい線せんの内うち側がわには関かん係けい者しゃ以い外がい立たち入いり禁きん止しです。

  No unauthorized persons are allowed inside the cordon.