
好词典

The term 'c14' is derived from the chemical symbol for carbon (C) and the isotope's mass number (14).
❶ 碳14,是碳的一种放射性同位素,常用于考古学和地质学中的年代测定。
“Scientists use c14 dating to determine the age of ancient artifacts.”
(科学家使用碳14测年法来确定古代文物的年代。)
“The c14 levels in the sample indicated it was over 5,000 years old.”
(样本中的碳14含量表明它已有超过5000年的历史。)
c14 dating — 碳14测年法,一种通过测量碳14含量来确定有机物质年龄的科学方法。
“C14 dating revealed that the fossil was approximately 10,000 years old.”
(碳14测年法显示这块化石大约有1万年的历史。)