（八）放射源，是指除研究堆和动力堆核燃料循环范畴的材料以外，永久密封在容器中或者有严密包层的放射性材料。
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He explained: "I got Covid in hospital, my kidneys started to back up, everything that could all seemed to sort of converge at the same time. And I had five operations on my knee."
Purple: Space terms