Utilities have been loath to publicize the Russian bomb supply line for fear of spooking consumers: the fuel from missiles that may have once been aimed at your home may now be lighting it.

公用公司不愿公开这个俄罗斯导弹供给线，怕吓到那些用户：那些燃料来自曾经对着你家的导弹，而现在却在给你们供电。

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In Times Square the police presence was especially evident, perhaps mindful of the car bomb of inflammable fuel and fireworks that came close to exploding there on a busy Saturday night in May 2010.

在时代广场上警方布置的力量尤为明显，可能是他们回想起2010年五月的那个星期六，当晚一辆载着易燃燃料和烟火的汽车炸弹在迫近这一地点时引发爆炸的情景。

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But creating such a warhead is the easier part of building a bomb. Harder by far is making the fuel.

然而制造弹头仅仅是核弹研发中比较简单的一步，到目前为止，制造原料要困难得多。

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Uranium enrichment is the process used to make fuel for nuclear power plants, but when extended it can also produce fissile material for an atomic bomb.

VOA: standard.2009.11.28

The federal courthouse, where Gillespie's trial took place, stood across the street from the memorial to the Oklahoma City blast, where Timothy McVeigh's massive fertilizer and fuel oil bomb killed 168 people at the Alfred P.

CNN: Caught on tape

Iran told the agency that no nuclear material had been introduced into the plant, and enrichment levels would only be high enough to make nuclear fuel, not a bomb.

BBC: Iran 'concealed nuclear facility'

Mr Obama will have to guard against the danger of Iran spinning out talks while also continuing to spin the centrifuges making the fuel that could be enriched for a bomb.

ECONOMIST: Challenges facing Barack Obama