封锁 (fēng suǒ): to blockade; to seal off; to lock down

During the war, the enemy blockaded the port, and no ships could enter or leave.

To control the epidemic, the government locked down the neighborhood where infection cases appeared, and residents could not go out temporarily.

After receiving the report, the police immediately cordoned off the crime scene and prohibited unauthorized personnel from entering.

Heavy snow caused a landslide on the mountain road, and the rescue team blockaded the entire road to prevent vehicles from being in danger.

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