C13
[医] 碳13, 天然同位素碳(原子量13)
🗣️ 情景例句
Sounds good to me.
我来。
Who is the girl?
那女孩是谁？
It is nine o'clock.Mr.Sawyer usually reads his newspaper at night.But he's not reading his newspaper tonight.
现在是9点钟。索耶先生通常是在晚上看报，但今天晚上他没看报。