Because it overheated.

因为它过热。

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The reported presence of Cesium 127 was disturbing, experts agreed, because it was evidence that the core had overheated, if only for a portion of time.

专家们同意，铯127的出现的报道非常令人不安，因为即使只是一段时间这已表明核心已过热。

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But nine days later a single electrical splice overheated because it had been badly soldered, and disaster struck.

但9天之后一个简单的电气连接因为焊接不良过热造成伤害。

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