Radiocarbon
n. 放射性碳, 碳-14\\n[化] 放射性碳
🏥 医学释义
放射性炭，射炭
🗣️ 情景例句
Is that one of the things Susan and Harry are bringing?
那是不是属于Susan和Harry要带的？
In fact she's 20 years old.
她只有二十岁。
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
看来人类早就致力于探索四季变迁了，比人们想像的要早20，000年。