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artificial radioactive element

美 [ˌɑːrtɪˈfɪʃl ˌreɪdioʊˈæktɪv ˈelɪmənt]英 [ˌɑːtɪˈfɪʃl ˌreɪdiəʊˈæktɪv ˈelɪmənt]

人工放射性元素

artificial radioactive element

artificial radioactive element

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