Following the explosion and fire on the rig, the blow-out preventer on the sea bed should have automatically sealed the well, but it failed, resulting in the massive oil spill.

在油井发生爆炸以及油井起火后，海底上的防喷器本来应该自动将油井封住，但是未能做到这一点，导致大规模的石油泄漏。

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A gas leak aboard a sealed bus could cause a major fire if it grew dense enough and was ignited by a spark.

在一辆密封的公交车上，如果燃气发生泄漏达到一定密度并有火花引燃就可能造成一场大火。

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State broadcaster CCTV cited witnesses as saying the sealed, air-conditioned bus caught fire without an explosion, and then burned rapidly.

官方媒体CCTV引用了一名目击者话称，这俩密封的公交车着火前未发生爆炸，之后火势蔓延迅速。

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The fire service sealed the drum with putty and a bigger "jam-jar" container.

BBC: 'Hazardous' chemical drum found on Jersey beach

Standing before the fireplace in his office recently, he recalled the January day when he lit a fire, unaware that the chimney had been sealed.

NEWYORKER: Money Talks

The list of work includes fire precaution measures, some structural repairs, making sure asbestos is sealed off and contained and refurbishing the kitchens.

BBC: Chaddesden school to undergo ?2m repairs