C14
[医] 碳14, 放射性同位素碳(原子量14)
🗣️ 情景例句
Away from the telephones and account books.
远离电话和帐簿。
I wonder how many girl friends he's got.
我不知道他有多少女朋友。
An old watch, by contrast,
然而一只老掉牙的手表，