Flasks for the transport of spent fuel are extremely strong containers made of steel or steel and lead.

运送废燃料的容器极为坚固，是用钢或钢铅合金制成的。

《柯林斯英汉双解大词典》

Canada said it would return spent fuel to the United States.

加拿大表示它将用过的燃料送回美国。

youdao

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

Both sides are expressing concern over North Korean statements on Friday that Pyongyang is continuing to extract plutonium from spent nuclear fuel for material useable in weapons.

VOA: standard.2009.09.06

By then, they estimate, nuclear plants will have generated another 40, 000 metric tons of spent fuel.

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

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

ECONOMIST: Banyan

The company mines uranium, makes nuclear fuel, designs and builds reactors and reprocesses spent fuel.

FORBES: Areva Taps The Other Nuclear Source: The Sun