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carbon dating

carbon dating noun
carbon dating
noun
Learner's definition of CARBON DATING
[noncount] technical
: a scientific way of finding the age of something that is very old (such as a dinosaur bone) by measuring the amount of certain forms of carbon in it碳定年法(通过测定古物中不同形态的碳的含量来计算其年代的科学方法)

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