The youngest competitor is telling a famous ancient story about Guan Yu titled " Scrap poison off the bone" and he got the great prize in the end.
这是我们中心最小的一个学员，正在专注的讲叙一个三国故事“刮骨疗伤”。他在这次比赛中取得了很好的成绩。
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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