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So little is known about it, because there is only about 1 ATOM OF FRANCIUM IN A CUBIC FOOT OF URANIUM ORE!

对它所知甚少,因为在1立英矿石中,仅有1个钫原子!

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anticatalase, anticatalyst, anti-catalyst, anticatarrhal, anticathexis, anticathode, anticenter, anti-chain, anticharm, antichlor,

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3G, 401(K), a,

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趣味化学实：Periodic Videos

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.

放射性很强的钚，起来真的很暖和。放射性更强的钫可能非常暖和。

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anticipate, anticipated, anticipation, anticipative, anticipator, anticipatory, anticipatory breach, anticity, anticlastic, anticlerical,

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3G, 401(K), a,
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