The material at Dounreay is not waste, it is a nuclear material from the fast breeder reactor programme that requires appropriate management.

敦雷的原料不是废料，而是来自快中子增殖反应堆计划的需要适当管理的原材料。

youdao

Dounreay was the UK centre for developing fast breeder reactors, which aimed to create new fuel as they consumed it, until the programme was cancelled in 1988.

敦雷曾是英国研发快中子增殖反应堆——目的在于消耗燃料的同时生成新燃料——的中心，直到1988年该项目取消。

youdao

New types of reactors were designed, including the Fast Breeder reactor powered by plutonium and cooled by liquid sodium.

新型的反应堆被设计出来，包括由钚提供能量，液态钠参与冷却的快中子增殖反应堆。

youdao

The panelists expect new nuclear plants to take the form of small modular reactors and, eventually, fast breeder reactors.

FORBES: The Nuclear Renaissance Is Back, Industry Panel Says

And the result is, as you suggested, that India now gets to produce an unlimited amount of fissile material from something called fast breeder reactors, and please don't ask me what that means.

NPR: Week in Review: India; Guantanamo; Iraq; FEMA

With plutonium no longer needed for use in the world's abandoned fast breeder reactor programmes and nuclear powers getting rid of their atomic weapons, large stockpiles of the highly toxic plutonium metal are starting to build up.

BBC: More suspect nuclear fuel found