最常见的钋是人工生产的。

The most common production of Polonium is by synthetically making it.

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钋是用来引爆核弹的。

Polonium is used to set off a nuclear bomb.

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钋的同位素在自然界中的确存在，但是相当罕见。

The isotope does occur in nature but only extremely rarely.

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钋的同位素在自然界中的确存在，但是相当罕见。

The isotope does occur in nature but only extremely rarely.

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