在福岛核电厂的反应堆中，正常情况下控制棒本是用来停止裂变反应的，但现在它们已经失去这种效能了。
In Fukushima's reactors, the control rods were used to shut down the fission reaction, which they did correctly, but they've exhausted their use now.
在福岛核电厂的反应堆中，正常情况下控制棒本是用来停止裂变反应的，但现在它们已经失去这种效能了。
In Fukushima's reactors, the control rods were used to shut down the fission reaction, which they did correctly, but they've exhausted their use now.
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