Thus, we need to start getting rid of this material along with fissile material created for weapons use.

因此，我们在清除用于制造武器的裂变材料的同时也需要开始清除这类材料。

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And we will call upon countries to begin negotiations in January on a treaty to end the production of fissile material for weapons.

我们将呼吁各国从明年一月开始谈判一项协议，以终止可用于武器的裂变材料的生产。

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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

First, ending the stalemates on the Fissile Material Cut-off Treaty and the Comprehensive Nuclear Test Ban Treaty.

BBC: In full: Brown security statement

Fissile material in this form is difficult to use in a weapons program, U.S. and European officials say.

WSJ: Iran Talks Off to Shaky Start

Fissile material in this form is difficult to use in a weapons program, U.S. and European officials said.

WSJ: Iran Cools Nuclear Work as Vote Looms