| 词汇 | isotope | 
| 释义 | isotope  noun [ C ]  physics, chemistry specialized uk/ˈaɪ.sə.təʊp/ us/ˈaɪ.sə.toʊp/  同位素 a form of an atom that has a different atomic weight from other forms of the same atom but the same chemical structure  a radioactive isotope of hydrogen 氢的放射性同位素  | 
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