The main problem was the lack of water to cool spent fuel rods.

目前其主要问题就是缺乏足够的水来冷却废弃的核燃料棒。

youdao

Of greatest concern are the spent fuel rods stored at reactor Nos. 3 and 4.

最令人担忧的是存放在3号和4号反应堆的用过的核燃料棒。

youdao

Under the pact, Russia will supply the fuel for Bushehr and then take back the spent fuel rods.

根据条约，俄罗斯为布什尔提供核燃料，同时回收废核燃料棒。

youdao

Reprocessing the remaining spent fuel rods at Yongbyon would give it one more bomb.

ECONOMIST: Banyan

Is it still your assessment that that cooling pond with the spent fuel rods is now empty?

WHITEHOUSE: Press Briefing

However, one of its permanently-closed reactors on Long Island Sound did, and spent fuel rods remain on site.

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