Dihydrofolic acid
[化] 二氢叶酸
🧩 词语组成解析
🗣️ 情景例句
have become good friends, haven't you?
成了好朋友，不是吗？
Things done cannot be undone.
木已成舟。
Let me take a look at your shoulder. Where does it hurt?
让我看看你的肩膀。哪里疼？