A lump of Plutonium, which is very radioactive, is really quite warm to touch. And francium, which I think is more radioactive, is probably very warm.
一块放射性很强的钚,摸起来真的很暖和。我认为放射性更强的钫可能非常暖和。
单词 | francium |
释义 |
francium
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随便看 |
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