C13
[医] 碳13, 天然同位素碳(原子量13)
🗣️ 情景例句
I can't hold a job down.
我不能老被拴在一个工作上。
Joseph likes to listen to music.
约瑟夫喜欢听音乐。
Before long, biscuits of all shapes and sizes began arriving at the factory.
不久，形状各异，大小不一的饼干陆续送到工厂。