Polyadenylic acid
多（聚）腺苷酸
🧩 词语组成解析
🗣️ 情景例句
We've been listening to you both.
我们一直在听你们朗诵。
If you sell the cow, you sell her milk too.
蚀了本也输了利。
When did you bring it to us?
您什么时候送来的？