C13
[医] 碳13, 天然同位素碳(原子量13)
🗣️ 情景例句
If you have time around Christmas, please come to visit my family.
如果你圣诞节前后有空，欢迎到我家来玩。
Apothecaries would not sugar their pills unless they were bitter.
好药不苦不会加糖衣。
It is Just what I need.
这正是我所需要的。