A shipment of bomb-grade uranium arrived at a secure facility in Russia on Monday, sent from a research reactor in Poland as part of a race to secure dangerous radioactive material around the world.

星期一，一列装载着核弹级铀材料的专列到达了一处俄罗斯的安全设施。这些核材料来自波兰的一个研究用的反应堆，运送它们，是为了确保世界各地的危险的放射性物质安全的努力的一部分。

youdao

Getting uranium from 20% enriched to the 90% or so needed for a bomb takes a lot less effort than getting (uranium from 20%) to the original 3.5% in the first place.

想要将浓度20%的铀浓缩至爆炸所需大约90%的浓度比最初(移后)浓缩至最初3.5%要简单很多。

youdao

Getting uranium from 20% enriched to the 90% or so needed for a bomb takes a lot less effort than getting to the original 3.5% in the first place.

想要将浓度20%的铀浓缩至爆炸所需大约90%的浓度比最初浓缩至3.5%要简单很多。

youdao

The plutonium bomb was dropped on Nagasaki on August 9th 1945, three days after a uranium bomb had destroyed Hiroshima.

ECONOMIST: Glenn Seaborg

Pakistan has the enrichment know-how North Korea needs for a uranium bomb.

ECONOMIST: North Korea

It isn't clear if it has been able to develop a uranium-based bomb, but experts have speculated that it used uranium in its February test.

WSJ: North Korea to Restart Yongbyon Nuclear Plant