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Noun:
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a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor
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用作名詞 (n.)
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Polonium is used to set off a nuclear bomb.
釙被把他們拿來體驗炸彈。
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Polonium is a naturally radioactive metallic element.
釙是種更具當然福射性的金屬件種元素。
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海詞英語詞典，十二年國際品牌
美
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