There is a tight security cordon around the area.

这一地区周围设有严密的安全警戒圈。

youdao

The French French Nuclear Safety Authority said a security cordon was set up around the Marcoule plant as a precaution.

法国核安全管理局表示，目前已经在马尔·库尔核电站周围建立了安全警戒线作为预防措施。

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3the Master control staff immediately sets security cordon in the accident area and wears gas mask and protective jump suit etc. protective equipments or safeguards to examine the leaking point.

主控人员立即对事故发生地点区域设置安全警戒，戴上防毒面具、连体防护服等防护用品或设施，对泄漏点进行检查。

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A more extensive security cordon involving paramilitary troops is planned for Monday's rally in the capital.

VOA: standard.2009.03.13

They insist they will overcome the security cordon and converge on Islamabad's downtown.

VOA: standard.2009.03.14

And it may still be impossible to ignore what happens outside the security cordon.

ECONOMIST: British banks

He crossed the security cordon placed around his house and attempted to walk to the Supreme Court.

WSJ: Pakistani Judge Gains Clout

According to the police, Friday morning's shoot-out happened when members of the clan opened fire as security forces were tightening a security cordon around the village.

BBC: Malaysian police carry a colleague's coffin