Put several fuel assemblies into the core of a nuclear reactor, and the amount of energy released gets even higher.

把几个燃料组件放到核反应堆的中心，释放的能量会更高。

youdao

If the U.S. finds a place for its nuclear waste to go, some fuel assemblies will have to be removed from casks and transferred to transportation packs, a dangerous enough task without the prospect of fuel rods ruptured or crumbling.

FORBES: Fancy New Lids for Nuclear Waste Casks, As Contents Get Hotter

Once the MOX fuel assemblies have been irradiated in commercial power reactors, the plutonium can no longer be readily used for nuclear weapons.

FORBES: Japanese Official: Most Dangerous Reactor May Have Ruptured, Leaking Radiation