It is a radiological poison, specifically absorbed by bone marrow, and is used, especially the highly fissionable isotope Pu 239, as a reactor fuel and in nuclear weapons.

尤其是其极具可裂变性的同位素钸239，被用作一种核反应燃料并用在核武器中。

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Chief among these interests are: counter-terrorism, disposal of Soviet-built chemical and biological weapons, security of nuclear and radiological materials, arms control, nonproliferation, and the responsible withdrawal of U.S. and NATO forces from Afghanistan.

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