赫琴收到的样本来自世界各地的核设施，他对其进行检测以寻找诸如高浓缩铀等非法材料的线索。
Hutcheon receives samples from nuclear facilities throughout the world.He then tests them for evidence of illegal materials like highly enriched uranium.
原想这是一次富有魅力的进攻，可是它取得了适得其反的效果，因为穆塔基坚称即使研究反应堆的协议通过，伊朗也会继续自行生产20%的高浓缩铀。
Intended as a charm offensive, it backfired when Mottaki insisted that even if the research reactor deal went through, Iran would continue to produce its own 20%-enriched uranium.
呼吁以高浓缩铀作为核反应堆燃料的国家改用低浓缩铀。
It called on states with reactors burning high-enriched uranium to switch to the low-enriched sort.
美国已从巴基斯坦转移了大量的高浓缩铀，毫无疑问，这些高浓缩铀将会被用于建造一个非法的核武器装置。
The United States has been working to remove highly enriched uranium from a Pakistani nuclear reactor, out of concern that it could be used to build an illicit nuclear device.
邦教授提到目前全世界大约有130个利用高浓缩铀作为燃料的反应堆。
Professor Bunn says there are currently about 130 research reactors around the world that still use highly enriched uranium for fuel.
有些国家正在清除其存储的可用于制造核武的高浓缩铀和钚，有些国家正在降低核反应堆扩散的风险，还有一些国家将在会议上签署协议并支持国际原子能机构的工作。
Some are getting rid of their stocks of highly enriched uranium or plutonium, both used in bombs. Others are lowering the risk of proliferation from reactors.
最终，伊朗退出协议，挑衅地开始自行进行20%的铀浓缩(这是向研制出核能炸弹的高浓缩燃料迈出了一大步)。
In the end, Iran backed out of the deal and provocatively started enriching to 20% itself (a big step further towards the high-enriched stuff need for a bomb).
IAEA根据军事上“相当数量(significant quantity)”的标准估计：25kg高浓缩铀或者8 kg分离钚就可以制造一件核武器。
The IAEA assesses these things using a measure of militarily "significant quantity" : the amount of highly enriched uranium (25kg) or separated plutonium (8kg) it would take to make a weapon.
据哈佛大学贝尔弗尔科学与国际事务研究中心的估计，全球大约有160万千克的高浓缩铀，以及50万千克的武器级钚。
According to the Belfer Centre at Harvard University, there is around 1.6m kg of highly-enriched uranium and 0.5m kg of weapons-grade plutonium in the world.
在华盛顿，一名军事情报官员告诉参议院委员会，伊朗可能在一年后生产出足够的可用于制造核武器高浓缩铀。
In Washington, a military intelligence official told a Senate committee that Iran could be one year away from producing enough highly-enriched uranium for a nuclear weapon.
协议草案要求伊朗用80%的自行生产的低纯度的铀从法国和俄罗斯换取高浓缩的核燃料。
It calls for Iran to trade about 80 percent of its domestically produced low-grade uranium for more highly enriched nuclear fuel from France and Russia.
然而，在同一份报告中，IAEA表示，伊朗已经开始在圣城库姆附近的地下工厂中安装用于制造高浓缩铀的机器。
However, in the same report, the IAEA says Iran has begun installing machines for creating highly enriched uranium at an underground site near the holy city of Qom.
伊朗表示已研制出一种新型的离心分离机，对铀进行浓缩的效率比现在使用的设备高六倍。
Iran says it's developed a new type of centrifuge which it says will be six times more efficient at enriching uranium than those currently in use.
全球核设施的样本都送到哈钦这里，然后他测试这些样本是否含非法成分，如高浓缩铀。
Hutcheon receives samples from nuclear facilities throughout the world. He then tests them for evidence of illegal materials like highly enriched uranium.
来自世界上接近50个国家的领导人在华盛顿参加核安全峰会，乌克兰承诺2012年之前消除高浓缩铀。
As leaders from nearly 50 countries meet in Washington for a major summit on Nuclear Security, Ukraine has pledged to eliminate stockpile of highly enriched uranium by 2012.
来自世界上接近50个国家的领导人在华盛顿参加核安全峰会，乌克兰承诺2012年之前消除高浓缩铀。
As leaders from nearly 50 countries meet in Washington for a major summit on Nuclear Security, Ukraine has pledged to eliminate stockpile of highly enriched uranium by 2012.
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