There were fears that an explosion at reactor unit 2 May have damaged the containment vessel, which increases the risk of release of hazardous radioactive materials.

有人担心2号反应堆发生的爆炸可能已经损坏了保护罩，从而增加了核泄漏的风险。

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Inside the arch will be a heavy duty crane and other remote-operated equipment to be used to start removing the crumbling radioactive fuel that remains in Unit 4.

拱顶内部会有一台重型起重机，还有其它一些远程操作设备，用于清除4号反应堆里逐渐衰变的残留放射性燃料。

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'No matter what protective gear you have on, if you touch or inhale radioactive material, that means death, ' said Yukio Takayama, leader of a Hyper Rescue Squad unit, told The Wall Street Journal.

超级救援队的队长高山由纪夫（Yukio Takayama）告诉《华尔街日报》，不管你穿上什么样的防护装备，只要你触碰或吸入放射性物质，这就意味着死亡；

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Intensely radioactive water from reactor Unit 2 is filling a nearby tunnel faster than workers can empty it, and radioactive levels of seawater near the plant increased sixfold following an aftershock on Saturday.

FORBES: Conditions May Be Deteriorating at Japanese Nuclear Power Plant

Tuesday's explosion at the No. 2 reactor in the Fukushima complex, 150 miles north of Tokyo, for the first time raised the possibility that the key containment structure of the unit, which protects the reactor vessel and keeps dangerous radioactive materials from leaking out, had been damaged.

WSJ: Japan's Nuclear Crisis Escalates