科学家一直在寻找更简单的方法制造名为浓缩铀的昂贵材料- - - - - -核反应堆和炸弹的燃料，现在只在大型工厂生产。
Scientists have long sought easier ways to make the costly material known as enriched uranium - the fuel of nuclear reactors and bombs, now produced only in giant industrial plants.
天野之弥还在会议上表示，叙利亚仍然拒绝讨论有关指称，说它在过去建造了一个没有宣布的核反应堆，以此用来生产炸弹材料。
Amano also told the meeting that Syria still refuses to discuss allegations it had been building an undeclared nuclear reactor intended to produce bomb material.
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