car·bon dat·ing
noun/ˌkɑːbən ˈdeɪtɪŋ/
/ˌkɑːrbən ˈdeɪtɪŋ/
(also formal radiocarbon dating)
[uncountable]- a method of calculating the age of very old objects by measuring the amounts of different forms of carbon in them
碳定年法（根据测定古物不同形态的碳含量以计算年代）