The Cause of fire As we all know, fire is one of the most terrible killers in our modern society.

火灾原因我们都知道火灾是现代社会最可怕的杀手之一。

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The primary arc beads and the secondary arc beads are the important evidence for identification of the cause of fire during airplane electrical fire investigation.

一次短路电弧熔珠和二次短路电弧熔珠是飞机电气火灾原因鉴别的重要物证。

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The cause of the fire is not yet known.

火灾的原因尚不清楚。

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Indonesia is on the so-called Pacific Ring of Fire where several tectonic plates meet and often cause earthquakes.

VOA: standard.2009.09.03

The Scottish Fire and rescue Service said the cause of fire was not yet known.

BBC: Firefighters tackle blaze at Stirling Superglass factory

Fire investigators are searching for evidence to establish the cause of the fire, which broke out shortly before 1330 GMT.

BBC: RELATED BBC SITES

The westbound lanes of the bridge were closed as officers investigated the cause of the deadly fire, but the patrol said one lane of traffic reopened early Sunday.

NPR: Patrol: 5 Die In Limousine Fire On Calif. Bridge