This third containment is then surrounded by the reactor building.

第三容器被整个核反应堆建筑包围着。

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This third containment is then surrounded by the reactor building.

第三容器被整个核反应堆建筑包围着。

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The explosion took place outside of the containment, but inside and around the reactor building (which has no safety function).

这个爆炸会发生在容器建筑的外面，但却是反应器建筑的里面和周围(反应器建筑没有安全功能)。

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This rectangular secondary containment building is the structure that most people have seen in pictures of the reactor.

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Both the drywell and the wetwell are surrounded by a secondary containment vessel (or shield building) also built from reinforced concrete about a meter thick.

FORBES: Explainer: What Caused The Incident At Fukushima-Daiichi