| 单词 | radiocarbon | 
| 释义 | radiocarbon  (reɪdioʊkɑːʳbən  ) also radio carbon uncountable noun [usually NOUN noun] Radiocarbon is a type of carbon which is radioactive, and which therefore breaks up slowly at a regular rate. Its presence in an object can be measured in order to find out how old the object is.   The most frequently used method is radiocarbon dating.   | 
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