Following a telephone call to the police from an anonymous caller, hundreds of shoppers were shepherded out of the store while roads in the area were sealed off.

在接到匿名电话报警后，数百名购物者被带出商店，该地区的道路也被封锁。

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Windows are usually sealed off.

窗户通常是封闭的。

《柯林斯英汉双解大词典》

The areas are sealed off and ringed by troops.

这一地区被封锁了，被军队包围了。

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For six weeks Marysville has been sealed off as investigators looked for signs of arson, while forensic teams had the gruesome task of searching for victims among the charred wreckage of homes, businesses and cars.

VOA: standard.2009.03.21

She added that part of the road had been sealed off for a forensic examination.

BBC: Murder probe after man's body found in house in Portsmouth

That advance stopped at Tiji, the city now sealed off by rebels on three sides.

CNN: Rebels watch Gadhafi troops from ancient lookout

The town was sealed off and 30 people were arrested in the incident on 29 September.

BBC: Walsall English Defence League protest: New arrests