Carbon dating
01
碳测年, 碳14测年
a method used for measuring how old an organic material is by calculating the amount of carbon they contain
语法信息
有生性状态
抽象
形态构成
复合词
不可数
例子
Carbon dating revealed that the ancient artifact was over 5,000 years old.
碳测年显示这件古代文物已有5000多年的历史。
