The United States and Russia signed an agreement to dispose of sixty-eight tons of weapons-gradeplutonium. They plan to use the plutonium as fuel for civilian nuclear reactors.
美国和俄罗斯签署协议,计划处置68吨武器级放射性钚,将其做为民用核反应堆的燃料。
2
In a major and welcomed development, Russia announced that it will close its last weapons-gradeplutonium production reactor.
一项重大、颇受欢迎的进展是俄罗斯宣布将关闭最后一座武器级钚生产反应堆。
3
Much of this remains dangerous for thousands of years, and a proportion of it can be used to produce weapons-gradeplutonium.