C13
[醫] 碳13, 天然同位素碳(原子量13)
??? 情景例句
That's nice.
很好。
What time does it get in?
什么時候到達那里？
The officer unscrewed the cap and put the bottle to his nostrils.
海關官員擰開瓶蓋，把瓶子放到鼻子底下。