The oldest fuel in the middle to keep the power peaks down and recycled fuel in sort of, the middle ring to levelize the power distribution.

最旧的燃料在中间，是用来保持能量的,顶峰不至太高，并回收燃料，在中环的，用来控制功率分布。

youdao

But Elton says there are significant advantages in using recycled fuel.

但埃尔顿认为再生燃料有几个重要优势。

youdao

We also have this back end in which after the spent fuel is used up in the reactor. It is stored, possibly re-processed, which we use to do, and recycled back into the reactor.

我们也有末端，那是在,乏燃料用完之后，它被储存，可能会再加工，我们曾经，在反向循环，再用到反应堆里。

youdao

Mixed-oxide or MOX fuel is recycled from nuclear warheads.

FORBES: U.S. To Bury Almost All Existing Used Nuclear Fuel; Recycling Deferred At Least 20 Years

Flight AC991 from Toronto to Mexico City is expected to generate at least 40 per cent fewer emissions by using jet fuel derived from recycled cooking oil and through other fuel-saving measures, making it the most environmentally-friendly flight ever flown by Air Canada.

ENGADGET: Air Canada embarks on its first biofuel-powered flight from Toronto to Mexico City

The Sellafield Mox plant was set up to meet what was expected to be a big international market for the recycled fuel.

BBC: More suspect nuclear fuel found