Though first used to make atomic bombs, fission is now used in reactors worldwide to produce heat and radiation energy.

虽然裂变最初用于制造原子弹，但现在全世界的反应堆都在使用裂变来产生热能和辐射能。

They could still deliver blasts of radiation energy.

它们仍然可以发射大量的辐射能。