N-COUNT A dirty bomb is a nuclear bomb that uses explosives to release radioactive material over a wide area. 脏弹; 爆炸后大面积扩散放射性物质的核弹
He was, they said, planning to build a dirty bomb that could scatter radioactive material over a city, probably Washington, DC.
官员说，帕迪拉正打算造一枚脏弹，可将辐射性物质遍布全城，目标也许是华盛顿特区。
If the computer picks up on a possible situation - say, a passenger has a dirty bomb or a bioweapon - a series of actions will occur.
如果计算机捕捉到可能发生的情况，比如一名乘客携带脏弹或生物武器，一系列动作将随之启动。
And that larger amounts of other radioactive material, from discarded X-ray machines to spent fuel, might be used to make a dirty bomb.
其他大量的放射性材料，从废弃的X光机到核废料，可能被用于制造脏弹。
But the acquisition of radioactive material for a so-called 'dirty bomb,' which is radioactive material that is dispersed with a conventional explosive device, that is not that challenging.
VOA: standard.2009.05.01
Experts say terrorist groups are seeking materials for a crude nuclear device - a so-called "dirty bomb" - that would have limited blast potential but could spread radiation in a major urban area.
VOA: standard.2010.04.11
An expert on nuclear proliferation at the RAND Corporation in the United States, Brian Jenkins,says because of its proximity to Somalia and its close ties to the West, Kenya is vulnerable to the worst-case scenario, where an al-Qaida terrorist unleashes a "dirty bomb" in Nairobi causing the death of thousands.
VOA: standard.2009.05.01
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