Scientists would find places where these radioactive metals are plentiful even t

游客2023-12-28 32

问题 Scientists would find places where these radioactive metals are plentiful even though all mixed up in rocks and soil.

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答案科学家时常找到富含此类放射性金属的地方，尽管这些金属全都混于岩石和土壤之中。

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