That too was blamed on methane, which had accumulated in sealed-off areas of the mine.

该爆炸也是由矿井密封区中不断积累的甲烷引起的。

youdao

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。

youdao

Windows are usually sealed off.

窗户通常是封闭的。

《柯林斯英汉双解大词典》

In order to determine the location of the leak, the crew had been sealing off small peripheral modules of the space station while Mission Control looked for accelerated pressure drops inside the sealed-off sections.

MSN: Crew finds ��culprit�� in space station leak

The election will take place in a sealed-off area of the Vatican, well away from prying eyes, and will continue in conditions of the strictest secrecy until a new pope emerges, however long that takes.

BBC: Analysis: Choosing the next pope

It transpires that Bridges' Flynn hasn't been doing much for 20 years but sitting around -- the portal that would allow him to leave has been sealed off -- and his fascist nemesis, returning from the first film, is once again Clu, now played by a digitized version of the young Bridges.

CNN: 'TRON: Legacy' makes novelty look cool