Polyprotic acid
[化] 多元酸
🧩 词语组成解析
🗣️ 情景例句
Well, that's what fathers are for.
嗯，父亲们的用处正在于此。
She won a scholarship to the state university.
她获得就读洲立大学的奖学金。
Do you want the large size or the small size?
您要大号的还是小号的？